Title

Toward forced assembly of in situ low-density polyethylene composites reinforced with low-Tg phosphate glass fibers: Effects of matrix crystallization and shear deformation

Document Type

Article

Publication Date

10-1-2012

Department

Polymers and High Performance Materials

Abstract

This study is aimed at investigating the feasibility of using facile forced assembly methods (temperature and shear strain-induced orientation of the dispersed phase) to create novel in situ low-density polyethylene (LDPE) composites containing fibrillar inorganic phosphate glass (P-glass) reinforcing phase during the composite fabrication. Clearly, the experimental results show that unique thermo-rheological conditions exist under which the in situ LDPE composites containing fibrillar P-glass with potential enhanced benefits can be prepared. DSC results showed that the P-glass has a moderate nucleating effect on the LDPE crystallization that restricts in situ deformation of the P-glass during the composite fabrication. Rheo-optical data showed that a 5% P-glass/95% LDPE hybrid composition, subjected to a shear rate of 20 s-1 in the parallel plate configuration and 130 degrees C gave in situ LDPE composite samples with the largest amount of P-glass fibers in the limited range of experimental conditions used. This study may spur interests in a better understanding of the potential for the in situ reinforcement of engineering plastics with inorganic P-glasses, at the molecular level, to produce novel in situ polymer composites with very high aspect ratios of the reinforcing inorganic phase. POLYM. ENG. SCI., 2012. (C) 2012 Society of Plastics Engineers

Publication Title

Polymer Engineering and Science

Volume

52

Issue

10

First Page

2090

Last Page

2098