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- W1974558705 abstract "Abstract BACKGROUND: Blocked isocyanate‐functionalized polyolefins have great potential for use in semicrystalline polymer blends to obtain toughened polymers. In this study, poly(butylene terephthalate) (PBT) was blended with allyl N ‐[2‐methyl‐4‐(2‐oxohexahydroazepine‐1‐carboxamido)phenyl] carbamate‐functionalized poly(ethylene octene) (POE‐ g ‐AMPC). RESULTS: New peaks at 2272 and 1720 cm −1 , corresponding to the stretching vibrations of NCO and the carbonyl of NHCON, respectively, in AMPC, appeared in the infrared spectrum of POE‐ g ‐AMPC. Both rheological and X‐ray photoelectron spectroscopy results indicated a new copolymer was formed in the reactive blends. Compared to uncompatibilized PBT/POE blends, smaller dispersed particle sizes with narrower distribution were found in the compatibilized PBT/POE‐ g ‐AMPC blends. There was a marked increase in impact strength by about 10‐fold over that of PBT/POE blends with the same rubber content and almost 30‐fold higher than that of pure PBT when the POE‐ g ‐AMPC content was 25 wt%. CONCLUSION: The blocked isocyanate‐functionalized POE is an effective toughener for semicrystalline polymers. Super‐toughened PBT blends can be obtained when the POE‐ g ‐AMPC content is equal to or more than 15 wt%. Copyright © 2009 Society of Chemical Industry" @default.
- W1974558705 created "2016-06-24" @default.
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- W1974558705 date "2009-06-12" @default.
- W1974558705 modified "2023-10-17" @default.
- W1974558705 title "Toughening effects of poly(butylene terephthalate) with blocked isocyanate-functionalized poly(ethylene octene)" @default.
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- W1974558705 doi "https://doi.org/10.1002/pi.2613" @default.
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