Effect of nucleation agents on the crystallization of poly(3-hydroxybutyrate-co-4-hydroxybutyrate) (P3/4HB)
| Autor: | Xiaojuan Wang, Wenfu Zhu, Zhifei Chen, Jueyu Pan, Liang Wang, Kaitian Xu |
|---|---|
| Rok vydání: | 2009 |
| Předmět: |
Materials science
Polymers and Plastics Nucleation Crystal growth General Chemistry Talc Surfaces Coatings and Films law.invention Crystallinity chemistry.chemical_compound Avrami equation chemistry Chemical engineering Boron nitride law Materials Chemistry medicine Organic chemistry Zinc stearate Crystallization medicine.drug |
| Zdroj: | Journal of Applied Polymer Science. |
| ISSN: | 1097-4628 0021-8995 |
| DOI: | 10.1002/app.31588 |
| Popis: | Boron nitride (BN), talc, hydroxyapatite (HA), and zinc stearate (ZnSt) were investigated as nucleation agents (NA) for nonfossil-based poly(3-hydroxybutyrate-co- 4-hydroxybutyrate) (P3/4HB) plastics. Nonisothermal crys- tallization behaviors of the P3/4HB/NA blends were exam- ined by DSC. It revealed that BN is the most efficient nucleation agent to promote the crystallization rate, however, but not the crystallization degree. The lasting crystallization of P3/4HB was also removed. The nucleation effect was strengthened with increase of BN content up to 1% and then slackened deeply when further BN was added. Isothermal crystallization analysis revealed that the addition of nuclea- tion agent BN does not alter the crystal growth mode of P3/ 4HB, with maintaining the Avrami parameter n value around 2.40. Talc did enhance the crystallization of P3/4HB with however milder crystal growth rate. HA and ZnSt did not promote, but depressed the crystallization of P3/4HB plas- tics. V C 2009 Wiley Periodicals, Inc. J Appl Polym Sci 116: 1116-1123, 2010 |
| Databáze: | OpenAIRE |
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