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By utilizing four different types of typical compatibilizers and dicumyl peroxide (DCP), toughening modification was performed on the blend system of polylactic acid/acrylonitrile-butadiene-styrene copolymer (PLA/ABS). The compatibility and crystallization properties of the blend system were characterized and tested through mechanical property tests, scanning electron microscopy (SEM), and differential scanning calorimetry (DSC). The results showed that the addition of compatibilizers could form a better dispersed "sea-island" phase structure in the blend system, with the tensile strength and impact strength increasing by up to 18.23% and 21.98%, respectively, although the crystallization capability decreased. With the addition of both compatibilizers and DCP, the phase structure of the blend system transformed into coexisting "sea-island" and "sea-sea" phases, with the maximum increases in tensile strength and impact strength of 47.99% and 86.64%, respectively. The compatibilizers and DCP synergistically enhanced the toughening effect on the blend system and improved its crystallization capability. [ABSTRACT FROM AUTHOR]

Anthraquinone dyes, which contain anthraquinone chromophore groups, are the second largest class of dyes after azo dyes and are used extensively in textile industries. The majority of these dyes are resistant to degradation because of their complex and stable structures; consequently, a large number of anthraquinone dyes find their way into the environment causing serious pollution. At present, the microbiological approach to treating printing and dyeing wastewater is considered to be an economical and feasible method, and reports regarding the bacterial degradation of anthraquinone dyes are increasing. This paper reviews the classification and structures of anthraquinone dyes, summarizes the types of degradative bacteria, and explores the possible mechanisms and influencing factors of bacterial anthraquinone dye degradation. Present research progress and existing problems are further discussed. Finally, future research directions and key points are presented.