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Crystallization Behaviors of Modified Poly(ethylene terephthalate) and Their Self‐nucleation Ability
Author(s) -
Yang Hui,
Caydamli Yavuz,
Fang Xiaomeng,
Tonelli Alan E.
Publication year - 2015
Publication title -
macromolecular materials and engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.913
H-Index - 96
eISSN - 1439-2054
pISSN - 1438-7492
DOI - 10.1002/mame.201400348
Subject(s) - materials science , crystallization , nucleation , thermogravimetric analysis , chemical engineering , ethylene , casting , nanocomposite , precipitation , composite material , poly ethylene , solvent , polymer chemistry , organic chemistry , chemistry , physics , meteorology , engineering , catalysis
A poly(ethylene terephthalate) (PET)/allylisobutyl polyhedral oligomeric silsesquioxanes (a‐POSS) nanocomposite is prepared by a solvent‐casting method and as‐received PET (asr‐PET) is modified by a precipitation method to yield precipitated PET (p‐PET). Their crystallization behaviors have been studied, and both modification methods improved the crystallization temperatures and crystallinities of PET. They were subsequently used to further nucleate asr‐PET at 1 and 5 wt% levels to form self‐nucleated PETs, with higher crystallization temperatures and higher crystallinities. Thermogravimetric analyses (TGA) show their thermal stabilities have been improved, and both self‐nucleated PETs have superior mechanical properties.