| RESEARCH PAPER |
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| Influence of Oxazoline Functionalized Recycled ABS on Properties of Recycled HIPS and ABS Blend |
| LI Yingchun, HE Maoyong
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| School of Material Science and Engineering, North University of China, Taiyuan 030051 |
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Abstract First, the molecular structure changes owing to the aging degradation of recycled high-impact polystyrene (R-HIPS) and recycled acrylonitrile-butadiene-styrene copolymer (R-ABS) were studied. On the basis of that, the influences of maleic anhydride grafted styrene-ethylene-butylene-styrene block copolymer (SEBS-g-MAH) and the oxazoline functionalized recycled ABS (R-ABSm) on the interface bonding of rubber and matrix phase of the R-HIPS and R-ABS and the changes of compatibility of the R-HIPS/R-ABS blend were studied. The results showed that when the ratio of R-HIPS/R-ABS/SEBS-g-MAH was 7/3/1.5 (mass ratio), with the addition of 4% (mass fraction) R-ABSm, the impact strength of R-HIPS/R-ABS/SEBS-g-MAH blend improved from 2 kJ/m2 to 9 kJ/m2. The rubber phase and the matrix phase of the blend became fuzzy. It is proved that the anhydride carbonyl groups of SEBS-g-MAH reacted with the oxazoline groups of R-ABSm, which added the rubber phase to the R-ABS.
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Published: 02 May 2018
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2017, Vol. 31 
