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Non-isothermal crystallization kinetics of poly (lactic acid)/modified carbon black composite
- Source :
- Polymer Bulletin. 62:629-642
- Publication Year :
- 2009
- Publisher :
- Springer Science and Business Media LLC, 2009.
-
Abstract
- A novel method was employed to modify the surface of carbon black (CB) by an organic small molecule in a Haake Rheomix mixer. Jeziorny equation, the Ozawa model and Mo equation were employed to describe the non-isothermal crystallization process of poly (lactic acid) (PLA), PLA/CB and PLA/modified carbon black (MCB) composites. It is found that the Ozawa model fail to describe the non-isothermal crystallization process for PLA and its composites, while Jeziorny equation and Mo’s theory provide a good fitting. The comparison of crystallization kinetics between PLA/MCB and PLA through Lauritzen–Hoffman model indicates that there appears a transition from regimes II to III in PLA and PLA/MCB. The fold surface free energy σ e of PLA/MCB composite is higher than that of neat PLA, implying that the existence of nucleating agent is unfavorable for the regular folding of the molecule chain.
- Subjects :
- Materials science
Polymers and Plastics
Kinetics
Composite number
Nucleation
General Chemistry
Carbon black
Condensed Matter Physics
Surface energy
law.invention
Lactic acid
chemistry.chemical_compound
Chemical engineering
chemistry
law
Polymer chemistry
Materials Chemistry
Molecule
Crystallization
Subjects
Details
- ISSN :
- 14362449 and 01700839
- Volume :
- 62
- Database :
- OpenAIRE
- Journal :
- Polymer Bulletin
- Accession number :
- edsair.doi...........9cc920cb17faa09c443c7ca80b155aba