Non-isothermal crystallization behavior of PLA/LLDPE/nanoclay hybrid: Synergistic role of LLDPE and clay

被引：49

作者：

As'habi, Ladan ^{[1
]}

Jafari, Seyed Hassan ^{[1
]}

Khonakdar, Hossein Ali ^{[2
]}

Haeussler, Liane ^{[3
]}

Wagenknecht, Udo ^{[3
]}

Heinrich, Gert ^{[3
]}

机构：

[1] Univ Tehran, Sch Chem Engn, Tehran, Iran

[2] Iran Polymer & Petrochem Inst, Tehran, Iran

[3] Leibniz Inst Polymer Res Dresden, D-01069 Dresden, Germany

来源：

THERMOCHIMICA ACTA | 2013年 / 565卷

关键词：

Polylactic acid; Crystallization behavior; Nanoclay; LLDPE; Nanocomposites; COLD CRYSTALLIZATION; POLY(L-LACTIC ACID); MOLECULAR-WEIGHT; POLYMER BLENDS; KINETICS; NANOCOMPOSITES; MORPHOLOGY; MELT; CRYSTALLINITY; STEREOCOMPLEX;

D O I：

10.1016/j.tca.2013.04.016

中图分类号：

O414.1 [热力学];

学科分类号：

070201 [理论物理];

摘要：

The non-isothermal crystallization behavior of polylactic acid (PLA) in presence of linear low-density polyethylene (LLDPE) and two different commercial-grade nanoclays, Cloisite 30B and Cloisite (R) 15A at different conditions were investigated using DSC and WAXS. The results showed that crystallization of neat PLA was very difficult from the melt in the non-isothermal quenching process and presence of nanoclays only improved the crystallization of PLA during heating. LLDPE as an efficient plasticizer enhanced the mobility of PLA chain segments, which led to the increased crystallization rate during heating. In PLA/LLDPE/clay hybrid, PLA component could crystallize only during heating and a fractionated crystallization of LLDPE was occurred during cooling. Cloisite (R) 15A as a good nucleating agent and LLDPE as an efficient plasticizer promoted the crystallization of PLA in a certain degree indicating the synergistic effects of LLDPE and nanoclays on PLA crystallization particularly at low nanoclays content. (c) 2013 Elsevier B.V. All rights reserved.

引用

页码：102 / 113

页数：12

共 49 条

[1]

Tuning the processability, morphology and biodegradability of clay incorporated PLA/LLDPE blends via selective localization of nanoclay induced by melt mixing sequence [J].