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Natural fibers have been extensively studied as a reinforcement filler in obtaining composites, replacing partially synthetic fibers. The vast majority of these materials originate from agro-industrial waste with a high content of lignin and cellulose making it a very interesting material with low cost and good mechanical properties. The purpose of the study was to obtain a composite based on alkyl ketene dimer resin, for the manufacture of sustainable packaging, made of paper by adding a 10% (w/w) con-tent of green coconut fiber and sugarcane bagasse fiber, and evaluated the impact of the filler on the mechanical behavior of the systems. The studied material was characterized from mechanical tests, such as Ring Crush Test (RCT) and Concora Medium Test (CMT) evaluating the maximum resistance supported by centimeter in the pre-pared composites, by the specimens. Through the RCT tests, with 10% w/w fibers, it was possible to verify that the fiber from sugarcane bagasse reached an increase of about 1% in the reinforcement effect compared to pure paper, and a difference of up to 2% in strength mechanics in relation to coir fiber, and CMT tests shows the reinforcement effect of the presence of sugarcane bagasse fiber, with an increase of about 3% compared to pure paper, and with a mechanical strength higher by 1% compared to coconut fiber. Therefore, the study was funneled with sugar cane fiber, varying the content by 20 and 30 % (w/w), evaluating the impact on the dispersion of this filler in the polymeric matrix and, consequently, the mechanical response of the composite with these compositions. The conclusion of the study was that the system prepared with 20% (w/w) was the one that achieved the greatest optimization of the mechanical properties, evaluated by the tests. This type of material can be applied to obtain cardboard boxes with resistance to high loads, due to the achievement of good mechanical properties.

Currently, paper pulping production from woody materials has many disadvantages due to its high energy, chemical, water consumption, methane emissions, and deforestation. However, the use of non-woody materials solves these problems. This study focused on the use of non-virgin raw material (Enset leaf fiber) in pulp and paper making. Enset leaf residues are the primary solid residues after the steam plant is used for “Kocho” processing. This leaf fiber has a lignocellulose component, converting this residue into Pulp and paper is crucial in terms of economic and waste management via the Kraft process. It has a higher fiber quality, lower energy consumption, and high recoverability of the chemical raw materials used in the process. The chemical composition of the Enset leaf fiber was analyzed using the Technical Association of Pulp and Paper. It has an excellent fiber length (2.12±1.46mm), fiber diameter (26.55±15.6µm) andacceptable rigidity coefficient (1.05±0.07), and flexibility coefficient (125.23±0.04). The maximum pulp yield was obtained at a temperature of 120°C, NaOH concentration of 8%, and 40 min cooking time off, which was 69.92% w/w. The functional groups of the Enset leaf fiber and morphological characteristics of the fiber were investigated.

The agriculture waste material can give benefit to many production industries. The studied crop is corn (Zea Mays)stalk. The objective of this work was to analysis the chemical composition; to study chemical pulping and papermaking properties of corn stalk and; to investigate the fiber morphology of properties of those crops. Firstly, the chemical composition of corn stalk were determined and compared with other non-woods. After that, chemical corn stalk was conducted in this analysis followed the physical and mechanical properties. The result showed that, corn stalk have cellulose (39.0%) and lignin content is the lowest (7.3%) content rather than other composition. In chemical pulping, reached high pulp yields had been produced and the strength properties: tear index, tensile index, burst and fold verified that they were of an acceptable quality for papermaking. This crop morphology was observed by Scanning Electron Microscopic (SEM), which showed a condensed composition of fiber structure. This study can developed a friendly product and promote the green technology, suitable to be used as an alternative pulp in paper making industry.Keywords:Fiber, Corn stalk, Composition, Green technology, Pulp and paper making.

The aim of this study was to study the morphology and structural characteristic of NCC hydrolyzed from filter paper. The NCCs were extracted by acid hydrolysis at 50°C for 1 hour, using 55% conc. H2SO4 under vigorous mechanical stirring, centrifugation at 12000 rpm in distillate water and followed by homogenizing at 7000 rpm. The morphology and surface profiles of the NCC suspension was characterized using field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM) and atomic force microscopy (AFM). The crystalline structure of the NCC was evaluated by using X-ray diffraction (XRD) technique. As a result, hydrolysed NCC was found to have a rod liked shape with diameter in the range of 100-300nm length and 10-50nm width, with the aspect ratio value of 10.3 nm. According to XRD investigations, the semi-crystalline cellulose was observed with the presence of an amorphous broad hump and crystalline peaks at 2θ of 15o and 22.7o, respectively. The crystalinity index of the raw filter paper was calculated as 86.7 % and increased to 94.4 % as it was extracted to NCC. Crystallite size of raw filter paper and NCC was calculated as 20.6 nm and 11.4 nm, respectively

In this paper, Kevlar or Polysulfonamide (PSA) pulp were used to replace plant fiber pulp partially or completely and by adjusting their ratios and a variety of Kevlar or PSA pulp reinforced activated carbon fiber paper (ACFP) were prepared via wet-laid paper making technology. The influences of addition of Kevlar or PSA pulp on the permeability, mechanical property, filtration performance, adsorption property of ACFP were discussed by maintaining the addition content of activated carbon fiber unchanged. Results showed that with the addition content of Kevlar or PSA pulp increased, the permeability and filtration performance of ACFP decreased obviously, while the bursting strength and the static CCl4 adsorption performances were firstly increased and then decreased. Generally, the permeability and filtration performance of Kevlar pulp reinforced ACFP were slightly worse than that of PSA pulp reinforced ACFP, while the bursting strength as well as the static CCl4 adsorption properties of Kevlar pulp reinforced ACFP were better than that of PSA pulp reinforced ACFP.

Fe-pillared bentonite was made into a paper-like composite by a papermaking technique using pulp fiber and activated carbon fiber. Orange II was used as a model compound to investigate the photocatalytic performance of the paper. SEM analysis showed that the catalytic paper had a porous structure originating from the layered fiber network, with Fe-pillared bentonite mostly embedded in the grooves along the axial direction of the carbon fibers. The optimum preparation conditions were: activated carbon fiber:Fe-pillared bentonite=1:2, activated carbon fiber:pulp fiber=5:3, the charges of Na2SiO3 and PAE were 2.5% based on the Fe-pillared bentonite and 0.4% based on the oven-dry fibers, respectively. The degradation ratio reached 85.2% at 180 min and after that little increase was observed. The catalyst could be repeatedly use and keep a high stability during the first 4 cycling use.

This project investigated the use of facile pulping methods to produce pulp from mixed bio-plantation waste fibres using sodium hydroxide, ethanol and garbage enzyme. Papers were successfully made from mixture of corn husk fibres with other bio-based green fibres such as banana stems and pineapple leaves. Soda pulping was found to be efficient in converting the cellulosic bio-fibres to the pulps used for paper making. The papers produced have low tensile strength, high water absorption, high bio-decomposition and degradation rate, as compared to commercial papers. SEM observation revealed that paper made from mixed bio-fibres have lightly cross-linked structures compared to heavily cross-linked or compact network structures found in commercial papers. The paper can be used in applications that require high water absorbency. The paper making process is more environmental friendly as it reduces the usage of wood fibres and hence reduces the environmental problem caused by deforestation.

Environmental awareness and depletion of the wood resources are among vital factors that motivate various researchers to explore the potential of agro-based crops as an alternative source of fiber material in paper industries such as writing, printing, wrapping, and packaging. Fibers from agro-based crops are available in abundance, low cost, and most importantly its biodegradability features, which sometimes referred as “ecofriendly” materials. This paper reports the biopulping of pineapple leaf fiber (PALF) by Ceriporiopsis subvermispora towards the properties of its fiber and paper forms. The individual fibers were characterized having good tensile properties at 0.3% of fungus treatment and favourable structural properties as characterized by Fourier transform infra-red (FTIR) spectroscopy. It was also shown that the PALF paper achieved desirable tear index value and uniform morphological observations compared to the conventional chemical pulping method. This new approach of pulping PALF finds applications in paper and packaging products which requires biofriendly characteristic and cost effective.

Homemade water in water cationic polyacrylamide (CPAM) emulsion was applied in cigarette paper pulp as dry strengthening agent with other strengthening agent. Good collaborative effect was achieved when CPAM was used in bleached wheat straw pulp with strengthening agent E and with cationic additives L as paper pulp strengthening agent. It was also showed that distinct strengthening effect was obtained when CPAM emulsion was applied in mixture of bleached needle kraft pulp (NBKP) and wheat straw pulp, breaking length and tearing index of cigarette handsheet made of mix pulp was respectively increased by 22.2% and17.0% when the dosage of CPAM was 0.8% of dry fiber. Through analysis of cigarette handsheet section scanning electron microscopy (SEM) photos, strengthening mechanism of CPAM emulsion to cigarette paper pulp was preliminary studied.

Paper acidification has become a serious problem in the world and deacidification is an effective way to extend the life of the paper documents. This essay introduced the acidification of the paper documents and the regular methods of deacidification at present. It surveyed the deacidification technologies in Europe and America countries and the progress of decacidification research programs in China, and then proposed the opinions on R&D and promotion of paper document acidification technology in China.

Super absorbent polymer (SAP) and fluff pulp were used as absorbing materials, and the different SAP mass ratio and fluff pulp were applied to paper diaper absorption core layer. Then, the influence of different SAP/fluff pulp in composite core layer on the paper diapers normal saline absorption rate and topsheet run-off were studied. Results showed that SAP has a significant effect on normal saline absorbency respect to fluff pulp. When the normal saline volume increased, the paper diapers absorption rate about normal saline decreased, while the topsheet run-off increased. When the SAP mass ratio to fluff pulp was 0.5:0.5, the liquid absorbency rate was 35.23 g/g, the paper diaper average absorption rate was 3.96 mL/s, and the biggest topsheet run-off was 13.25 g.

The aim of this research was to produce three-layer Medium Density Particleboard (MDP), with the addition of impregnated paper, in the inner layer, in proportions of 1; 5 and 20%. In this study, MDP was composed with particles of small size in outer layers, and larger particles in internal layer. After panel manufacturing, physical and mechanical tests based on Brazilian Code ABNT NBR 14.810 were carried out to determine moisture content; density; thickness swelling; water absorption; modulus of rupture (MOR) and modulus of elasticity (MOE) in static bending and internal adhesion. Test results were compared to commercial panels, produced with 100% Eucalyptus, considering the requirements specified by Brazilian Code. Properties presented values close to normative specifications, indicating positively the possibility of production of MDP using addition of waste paper impregnated.

With rapid increase of waste paper recycling, more and more researchers focus on the advanced technologies of sorting impurities form waste paper. The principals of main identification and sorting technologies are introduced in this paper, whose advantages and disadvantages are discussed. Because of importance of sorting technologies based on near-infrared spectroscopy, we emphasis its principle, application and research status etc.. At last, research and development tendency of identification and sorting technology are prospected.

Rabbit is a traditional textile material and has protein content about 93%. Rabbit hair wastes are abundantly present in textile processing due to its poor spinnability. In order to recycle the waste rabbit fiber effectively, the rabbit protein was researched. The papermaking method was performed for the first time and their properties of the hybrid paper were discussed in this study. Different contents of rabbit protein were successfully prepared and mixed with pulp fibers to remade papers. Finally, performances of these papers were characterized. The results showed that the surface of the rabbit protein paper was flat, white and writing fluently. The ink absorbance of novel paper increased. Moreover mechanical properties of the rabbit protein paper were stronger than the untreated paper. The folding endurance decreased firstly and then increased.

In this article, Fenton oxidation treatment technology was employed to the improving of quality of post treated wastewater from pulp & paper mills in order to increase the recycling ratio of final treated wastewater. The reaction conditions were optimized through single-factor experiments and the removal of color were tested for the optimizing. It was found in this study that the color of Fenton oxidation treated water was variegated with the extending of settling time. The optimized conditions were: Dosage of H2O2 was 682.1mg/L(30% m/m), 1.5 times theoretical consumption, 205mg/L FeSO47H2O (H2O2:FeSO4=15:1), the initial pH and the reaction time were 4.5 and 40min, respectively. The removal of the color and COD were 51.3% and 80% after Fenton treatment. GC-MS analysis shown that the contents of organic extracts and most of organic compounds reduced significantly after the oxidational treatment.

Paper industry produces large amounts of sludge with about 65wt% moisture content. Due to its complex composition, the charge of traditional disposal method is high and easy to bring about secondary pollution. In this paper, the influences of temperature, oxidation coefficient and residence time on the performance of supercritical water oxidation (SCWO) of paper mill sludge were investigated. The results show that SCWO can almost completely eliminate organics in sludge and obtain transparent liquid products meeting relative national standards at 550°C, 5min with an oxidation coefficient of 3.0. However, during this process, TN changes to NH3-N, so NH3-N in liquid products increases with operation parameters, indicating the recalcitrant nature of NH3-N, and which needs further treatment.

Both water repellency and water vapour barrier properties were endowed at paper surface by coating with beeswax-chitosan latex. It was found that the water vapour transmission rate of coated paper decreased as the drying temperature increased. However, water contact angle was not affected with it. Although the surface morphology deformed at high drying temperature, the roughness values maintained at micro-scale. Further analysis indicated that the water vapour barrier property of coated paper was influenced by the density of the coating layer.

Graphene paper (GP) with layered structure and highly conductive network is fabricated by a facile technique of vacuum filtration and studied as a single-component and binder-free anode of lithium ion batteries (LIBs). The process of fabrication of GP without any binder and high-temperature treatment, in the meantime, great improvement in both the capacity and cycling performance of the GP electrodes have compared with other kinds of traditional graphite electrode materials. Given the simplifying anode fabrication, low manufacturing costs and many electrochemical properties of the GP anode, it is regarded as an excellent anode material of LIB with great promise for its both excellent cycling performance and electrochemical properties. The specific capacity can reach to over 200 mAhg-1after 60 charge-discharge cycles under the current rate of 50 mAg-1.

The study aimed to describe the alkaline treatment advantage to remove ash component from natural rice straws. Most of the ash component in the rice straw is silica. High ash content is particularly harmful to cutting tools and to chemical to recovery systems in the pulp paper industry. In this study, the silica content has been removed simply through by immersion process in the 5% sodium hydroxide solution to obtain de-silicated rice straw. The study revealed the effectiveness of this alkaline process and the compatibility in commercial practice. The rice straw pulping is considered competitively to complement the global demand of raw material in paper production. Therefore, the treated rice straw plays an important role in providing raw material in the form of wood and rice straw blend feedstock for pulp and paper industry.

Based on the domestic OCC pulp as raw material, it was found that the optimum conditions for laccase treatment were: the concentration of laccase 16U/g dry pulp, the pulp consistency 5%, temperature 50 °C, pH=5.0 and reaction time 90min. OCC treated with laccase alone can improve paper strength properties. The dry tensile index and wet tensile index of the control sample were 21.80 Nm/g and 0.22 Nm/g, respectively. The dry tensile index and wet tensile index after OCC treated with laccase alone were 23.36 Nm/g and 0.28 Nm /g. Comparing to the control pulp, the dry tensile index and wet tensile index of OCC treated with laccase were increased by 6.88% and 27.3%, respectively. At the same time, the laccase system can obviously improve the strength of the pulp properties with adding the mediator, especially using histidine, the dry and wet strength of paper was largely improved.