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Lightweight investigation of long chain branching polypropylene/cellulose nanofiber composite foams
Author(s) -
Nobe Rie,
Qiu Jianhui,
Kudo Makoto,
Zhang Guohong
Publication year - 2021
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.50193
Subject(s) - materials science , composite material , polypropylene , composite number , cellulose , nanofiber , branching (polymer chemistry) , flexural strength , molding (decorative) , flexural modulus , izod impact strength test , ultimate tensile strength , chemical engineering , engineering
Long chain branching polypropylene (LCBPP)/cellulose nanofiber (CNF) composite foams were prepared by short shot foam injection molding method and their morphological, mechanical, and thermal properties were also investigated. The cellular structure of LCBPP/CNF composite foams was improved with weight reduction (WR) ratios increasing. The cell densities of LCBPP/CNF composite foams were dramatically increasing with WR ratios rising. More, the fine and uniform cellular structures were obtained due to the incorporation of CNF. The highest cell density, specific flexural strength, and modulus could achieved 20 × 10 3 cell/cm 2 , 65 MPa/(g/cm 3 ) and 2.7 GPa/(g/cm 3 ), respectively. Furthermore, the specific Charpy impact strengths were also higher than the ones of solid samples. At last, the thermal insulation properties were discussed accordingly.