Rheological,mechanical and thermal properties of propylene‐ethylene block copolymer/polyalphaolefins blends |
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| Authors: | HS Ha MC Kang HH Cho BK Kim |
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| Affiliation: | 1. Korea Petrochemical Ind. Co., LTD., Ulsan, Korea;2. National Core Research Center, Pusan National University, Busan 609‐735, Korea;3. Department of Organic Materials Science and Engineering, Pusan National University, Busan 609‐735, Korea;4. Department of Polymer Science and Engineering, Pusan National University, Busan 609‐735, KoreaDepartment of Polymer Science and Engineering, Pusan National University, Busan 609‐735, Korea |
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| Abstract: | The rheological, thermal, and mechanical properties of propylene–ethylene block copolymer (PPB) blends with predominantly atactic molecular structure of low molecular weight polypropylene and propylene copolymers with either ethylene or 1‐butene (APAO) have been studied. It has been found that blend properties depend on comonomer type, content, and molecular weight of APAO as well as blend composition. APAO having ethylene comonomer showed better miscibility with PPB than the other ones, and high comonomer content of APAOs gave dramatic increase in impact strength over 30 wt%. It has been concluded that APAO can be used as an effective modifier of PPB. POLYM. ENG. SCI., 47:1905–1911, 2007. © 2007 Society of Plastics Engineers |
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