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C30 ‐45 long‐chain alkyls modified silsesquioxane: A promising additive for polyethylene
Author(s) -
Zhang Yi,
Zhang Yongjie,
Yu Fan,
Yang Wei,
Li Xiaopei,
Wang Zhichao,
Wang Shuai
Publication year - 2021
Publication title -
polymer composites
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.577
H-Index - 82
eISSN - 1548-0569
pISSN - 0272-8397
DOI - 10.1002/pc.25970
Subject(s) - linear low density polyethylene , silsesquioxane , materials science , composite material , alkyl , fourier transform infrared spectroscopy , polyethylene , dispersion (optics) , rheology , ultimate tensile strength , polymer , chemical engineering , organic chemistry , chemistry , physics , optics , engineering
A novel commercial available and inexpensive long‐chain alkyl (C30‐45) modified silsesquioxane, namely (C30‐45 alkyl)dimethylsilyl polypropylsilsesquioxane (C30PSS), was applied as a functional filler for linear low density polyethylene (LLDPE). For comparison, LLDPE/octaisobutyl polyhedral oligomeric silsesquioxane (BuPOSS) nanocomposites were also prepared via melt blending. The chemical and crystalline structures of C30PSS and BuPOSS were first identified by Fourier transform infrared spectroscopy, solid 29 Si NMR, and X‐ray diffraction. The dispersion of two fillers in the polymer matrix was analyzed via scanning electron microscopy and X‐ray energy dispersive spectroscopy. The rheological, tensile, and thermal properties of pristine LLDPE, LLDPE/C30PSS, and LLDPE/BuPOSS composites were systematically studied. Our results showed that C30PSS can serve as a promising and low‐priced filler for LLDPE with respect to its fine dispersion in LLDPE and its abilities to improve the rheological and mechanical properties of LLDPE.