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Chemically foaming of biodegradable poly(propylene carbonate) derived from carbon dioxide and propylene oxide
Author(s) -
Guan L.T.,
Xiao M.,
Meng Y.Z.,
Li R.K.Y.
Publication year - 2006
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.20460
Subject(s) - propylene carbonate , propylene oxide , blowing agent , materials science , foaming agent , composite material , scanning electron microscope , ultimate tensile strength , polyvinyl alcohol , carbonate , decomposition , carbon dioxide , composite number , chemical engineering , polyurethane , polymer , copolymer , organic chemistry , porosity , ethylene oxide , chemistry , electrode , engineering , electrochemistry , metallurgy
A composite chemical blowing agent PU8, composed of azodiformamide (AC), N , N ′‐dinitroso pentamethylene tetramine (H) and other chemicals, was used to prepare the poly(propylene carbonate) foam material. The decomposition behavior of the blowing agent was investigated. The effect of blowing agent content and the foaming condition on the foaming of poly(propylene carbonate) was studied in detail. The results suggested that 10 phr PU8 is the optimum formulation to afford a desired poly(propylene carbonate) foam. The morphologies and compression strength of the poly(propylene carbonate) foam were studied using a scanning electron microscope and tensile tester, respectively. The foam with a blowing ratio of 16 can be obtained under an optimum foaming condition at 160°C for 30 min. POLYM. ENG. SCI. 46:153–159, 2006. © 2005 Society of Plastics Engineers