| Vol.27, No.2(2020-3)(121-126) |
| Preparation Technology and Characterization of Polylactic Acid/Polystyrene-Polyethylene-Polybutylene Blends with Different Contents of Maleic Anhydride Grafted Polypropylene 不同含量馬來酸酐接枝聚丙烯對聚乳酸/聚苯乙烯-聚乙烯-聚丁烯摻合物相容性改善 |
| Chiao-Chi Cheng, Jia-Ci Jhang, Ching-Wen Lou, Jia-Horng Lin 鄭喬薺、張家綺、樓靜文、林佳弘 |
| In this experiment, polystyrene-ethylene-butylene-styrene block copolymer (SEBS) elastomer polymer was used as a toughening agent, and maleic anhydride grafted polypropylene (PP-g-MA) was used as a compatibilizer. The polylactic acid (Polylactide, PLA), a brittle polyester material, was modified. The mixing ratio was changed, and PLA/SEBS/PP-g-MA composites were prepared by single-screw granulator and injection molding machine to investigate the effects of different mixing ratios on mechanical properties and thermal properties and PP-g-MA content on PLA. The impact of compatibility with SEBS. The results show that the PLA/SEBS/PP-g-MA mixing ratio is 39/60/1, and the impact strength is 315.63 J/m², which achieves a significant toughening effect, improves the brittleness of the PLA, and demonstrate the toughening mechanism of PLA/SEBS/PP-g-MA by SEM test. In the PLA/SEBS/PP-g-MA composites, the presence of SEBS improves the shortcomings of the blends that may have insufficient thermal stability, increasing the melting point to about 174 °C. 本實驗以聚苯乙烯-乙烯-丁烯-苯乙烯嵌段共聚物 (SEBS) 彈性體高分子為增韌劑，以馬來酸酐接枝聚丙烯 (PP-g-MA) 為相容劑，對脆性聚酯材料聚乳酸 (Polylactide, PLA) 進行改質。改變其混合比例，透過單螺桿造粒機及射出成型機製備PLA/SEBS/PP-g-MA複合材料，以探討不同混合比例對於機械性質與熱性能的影響及PP-g-MA含量對PLA與SEBS之間相容性的影響。由結果顯示，PLA/SEBS/PP-g-MA混合比例為39/60/1，衝擊強度為315.63 J/m²，達到顯著增韌之效果，改善PLA的脆性問題，並且由SEM測試中表現其增韌機制。而PLA/SEBS/PP-g-MA複合材料中，SEBS的存在改善其共混物可能存在熱穩定性不足之缺點，使熔點提升至約174℃。 |
| Polylactide, Polystyrene-b-poly(ethylene-co-1-butene)-b-polystyrene, Maleic anhydride grafted polypropylene, Mechanical properties, Toughening modification 聚乳酸、聚苯乙烯-乙烯-丁烯-苯乙烯嵌段共聚物、馬來酸酐接枝聚丙烯、機械特性、增韌改性 |
| Year | Volume |
| 2020 |
27.1
|
27.2
27.3 | |
| 2019 | 26.1 | |
| 2018 | 25.1 | |
| 2017 |
24.1
|
24.2
24.3 | 24.4 24.5 | 24.6 24.7 | 24.8 24.9 | |
| 2016 |
23.1
|
23.2
23.3 | 23.4 23.5 | 23.6 23.7 | 23.8 |
| 2015 |
22.1
|
22.2
22.3 | 22.4 22.5 | |
| 2014 |
21.1
|
21.2
21.3 | |
| 2013 |
20.1
|
20.2
20.3 | 20.4 |
| 2012 |
19.1
|
19.2
19.3 | 19.4 |
| 2011 |
18.1
|
18.2
|
| 2010 | 17.4 |