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Morphology, structure, and rheological property of linear low‐density polyethylene grafted with acrylic acid
Author(s) -
Huang H. L.,
Yao Z. H.,
Yang J. H.,
Wang Y.,
Shi D. A.,
Yin J. H.
Publication year - 2001
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.1363
Subject(s) - linear low density polyethylene , polymer chemistry , spherulite (polymer physics) , crystallization , materials science , rheology , rheometer , acrylic acid , morphology (biology) , polyethylene , monomer , chemical engineering , polymer science , composite material , chemistry , polymer , organic chemistry , engineering , biology , genetics
The chain structure, spherulite morphology, and rheological property of LLDPE‐ g ‐AA were studied by using electronspray mass spectroscopy, 13 C–NMR, and rheometer. Experimental evidence proved that AA monomers grafted onto the LLDPE backbone formed multiunit AA branch chains. It was found that AA branch chains could hinder movement of the LLDPE main chain during crystallization. Spherulites of LLDPE became more anomalous because of the presence of AA branch chains. Rheological behavior showed that AA branch chains could act as an inner plasticizer at the temperature range of 170–200°C, which made LLDPE‐ g ‐AA easy to further process. © 2001 John Wiley & Sons, Inc. J Appl Polym Sci 80: 2538–2544, 2001