eXPRESS Polymer Letters | |
Morphology and improved impact strength of cellulose acetate butyrate blended with polyethylene copolymer | |
A. Podshivalov1  | |
关键词: polymer blends and alloys; cellulose acetate butyrate; polyethylene copolymer; blend morphology; impact properties; | |
DOI : 10.3144/expresspolymlett.2018.74 | |
学科分类:生物科学(综合) | |
来源: eXPRESS Polymer Letters | |
【 摘 要 】
Incompatible blends of cellulose acetate butyrate (CAB) and copolymer of ethylene, acrylic ester, and maleic anhydride(PE-Acr-MA) with a component ratio 70/30 vol% were prepared by melt extrusion at the rates of 150 and 500 rpm.The goal was to modify weak impact properties of CAB. We showed that at a speed of 500 rpm, both small individual(0.9 μm in diameter) and large coalesced (2.3 μm in diameter) particles of the PE-Acr-MA phase were formed; the impactstrength of the blend increased in 6.5 times as compared with that of pure CAB. However, at a melt mixing rate of 150 rpm,the size of the individual PE-Acr-MA particles decreased in 3.8 times, whereas that of the coalesced particles diminished by6.6 times; the impact strength of the blend increased in about 40 times as compared with that of pure CAB and reached thevalues around and higher than 70 kJ/m2. The effect of the screw rotating speed on viscoelastic properties of each componentand their viscosity ratio was analyzed and shown to control blend morphology and mechanical properties.
【 授权许可】
CC BY
【 预 览 】
Files | Size | Format | View |
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RO201910281331370ZK.pdf | 469KB | download |