PPO、PET、环氧合金的反应兼容.pdfVIP

Reactive Compatibilization of PET and PPE Blends by Epoxy Couplers DA-WEI LO, CHIH-RONG CHIANG, FENG-CHIH CHANG Institute of Applied Chemistry, National Chiao-Tung University, Hsinchu, Taiwan, Republic of China Received 25 July 1996; accepted 9 January 1997 ABSTRACT: A commercially available tetrafunctional epoxy monomer was demon- strated to be an effective reactive compatibilizer for blends of poly(ethylene terephthal- ate) (PET) and polyphenylene ether (PPE). It requires about 10–20% by weight of a conventional reactive compatibilizer to achieve the same level of compatibilization in terms of domain size reduction and mechanical property improvement. This epoxy monomer is able to contact and react with PET and PPE simultaneously during high shear extruder blending to form the desirable PET–epoxy–PPE mixed copolymer. This mixed copolymer contains PET and PPE segments that tend to anchor at the interface to act as an efficient compatibilizer of the PET and PPE blends. 1997 John Wiley Sons, Inc. J Appl Polym Sci 65: 739–753, 1997 Key words: polymer blend; reactive compatibilizer; coupling agent; PPE; PET; epoxy INTRODUCTION Certain polymers, oligomers, and small mole- cules containing multiple glycidyl functional The amount of yearly published literature on the groups, C–X n (n 2), are able to function as effec- area of nonreactive compatibilization has main- tive reactive compatibilizers for certain polymer tained a steady growth rate during last two de- pairs if both blend constituents A and B contain the cades. The amount of literat