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Natural rubber–HDPE blends with liquid natural rubber as a compatibilizer. I. Thermal and mechanical properties
Author(s) -
Ahmad Sahrim,
Abdullah Ibrahim,
Sulaiman Che Som,
Kohjiya S.,
Yoon J. R.
Publication year - 1994
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.1994.070510801
Subject(s) - natural rubber , materials science , high density polyethylene , composite material , ultimate tensile strength , polyethylene , polymer blend , thermoplastic , polymer , copolymer
The measurement of physical properties of thermoplastic natural rubber (TPNR) of NR–HDPE blends have been made at various compositions of high‐density polyethylene (HDPE). The tensile properties and hardness of TPNR improve significantly with the addition of liquid natural rubber (LNR) to the blend. The degree of cross‐linking also increases with increasing amount of LNR added. The LNR with molecular weight ( M w ) of 50,000 and reactive terminals promotes cross‐linking within the rubber phase and grafting of the polyethylene chains onto the rubber matrix system. The maximum stress and strain of the blends measured are about 7.5 MPa and 1000%, respectively. Dynamic mechanical analysis results indicate a single T g on a tan δ trace at about −50 and −55°C for the two types of blends, respectively. © 1994 John Wiley & Sons, Inc.