Plasticized poly(3-hydroxybutyrate) with improved melt processing and balanced properties

被引：77

作者：

Panaitescu, Denis Mihaela ^{[1
]}

Nicolae, Cristian Andi ^{[1
]}

Frone, Adriana Nicoleta ^{[1
]}

Chiulan, Ioana ^{[1
]}

Stanescu, Paul Octavian ^{[2
]}

Draghici, Constantin ^{[3
]}

Iorga, Michaela ^{[1
]}

Mihailescu, Mona ^{[4
]}

机构：

[1] Natl Inst Res & Dev Chem & Petrochem, Polymer Dept, 202 Splaiul Independentei, Bucharest 060021, Romania

[2] Univ Politehn Bucuresti, Adv Polymers Mat Grp, 1-7 Polizu St, Bucharest 011061, Romania

[3] Romanian Acad, CD Nenitescu Organ Chem Ctr, 202 B Splaiul Independentei, Bucharest 060023, Romania

[4] Univ Politehn Bucuresti, Fac Sci Appl, Dept Phys, 313 Splaiul Independentei, Bucharest 060042, Romania

来源：

JOURNAL OF APPLIED POLYMER SCIENCE | 2017年 / 134卷 / 19期

关键词：

biopolymers; crystallization; mechanical properties; plasticizer; thermal properties; MECHANICAL-PROPERTIES; CRYSTALLIZATION KINETICS; MORPHOLOGY; CRYSTALLINITY; DEGRADATION; BEHAVIOR; POLY(BETA-HYDROXYBUTYRATE); POLYHYDROXYBUTYRATE; BIODEGRADATION; BIOCOMPOSITES;

D O I：

10.1002/app.44810

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The widespread application of poly(3-hydroxybutyrate) (PHB) in the food packaging and biomedical fields has been hindered by its high brittleness, slow crystallization, poor thermal stability, and narrow processing window. To overcome these limitations, a mixture of biodegradable and biocompatible plasticizers was used to modify PHB. Epoxidized soybean oil (ESO), acetyl tributyl citrate, poly( ethylene glycol) 4000 (PEG4000), and poly( ethylene glycol) 6000 (PEG6000) were tested to improve PHB melt processing and to achieve balanced thermal and mechanical properties. These plasticizers increased the flexibility and decreased the melt viscosity, improving the processability. The tensile strength was maintained within the limit of experimental error for ESO and decreased slightly (6-7%) for the other plasticizers. PEG6000 and ESO delayed the decomposition process of PHB. The plasticizers did not hinder the crystallization, and poly( ethylene glycol) s increased the crystallinity. The change in the interplanar distance and crystallite size, correlated with lamellar stack dimensions, gave more information on the plasticizers' effects in PHB. The blend with 5 wt % ESO was considered suitable for the fabrication of marketable PHB films. This study showed that it is possible to tailor the rheological, thermal, and mechanical behavior of a commercial PHB through the addition of a second plasticizer. (C) 2017 Wiley Periodicals, Inc.

引用

页数：14