Effect of Nucleation Agents on the Crystallization of Poly(3-hydroxybutyrate-co-4-hydroxybutyrate) (P3/4HB)

被引：28
|
作者：
Wang, Liang [1 ]
Wang, Xiaojuan [1 ]
Zhu, Wenfu [1 ]
Chen, Zhifei [1 ]
Pan, Jueyu [1 ]
Xu, Kaitian [1 ]
机构：
[1] Shantou Univ, Multidisciplinary Res Ctr, Shantou 515063, Guangdong, Peoples R China
来源：
JOURNAL OF APPLIED POLYMER SCIENCE | 2010年 / 116卷 / 02期
关键词：
nucleation agent; P3/4HB; nonisothermal crystallization; isothermal crystallization; Avrami equation; THERMAL-PROPERTIES; BACTERIAL COPOLYESTERS; ALCALIGENES-EUTROPHUS; POLY(3-HYDROXYBUTYRATE-CO-3-HYDROXYVALERATE); POLY(3-HYDROXYBUTYRATE); POLYHYDROXYALKANOATES; 4-HYDROXYBUTYRATE; 3-HYDROXYBUTYRATE; BIOSYNTHESIS; DEGRADATION;
D O I：
10.1002/app.31588
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
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 crystallization behaviors of the P3/4HB/NA blends were examined 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 crystattization analysis revealed that the addition of nucleation 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 ZrSt did not promote, but depressed the crystallization of P3/4HB plastics. (C) 2009 Wiley Periodicals, Inc. J Appl Polym Sci 116: 1116-1123, 2010
引用
收藏
页码：1116 / 1123
页数：8
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