在水悬浮体系中,经自由基引发聚丙烯（PP）与马来酸酐（MAH）、苯乙烯（ST）及丙烯酸丁酯（BA）接枝聚合制备接枝产物（PP-g-PMSB）,同时体系中产生了非接枝的聚合物（PMSB′）。结果表明,随单体含量增加,接枝率和PMSB′含量升高,且在接枝率高于5.25%时出现微量凝胶。三单体以长支链形式接枝到PP主链上,随接枝率的增加,PP-g-PMSB热稳定性和极性提高,熔体流动速率减小。接枝率5.50%时,PP-g-PMSB水接触角为79.52°;PMSB′含量3.25%时,水接触角降低至69.62°。
Polypropylene（PP） was grafted with methyl methacrylate（MAH）,styrene（ST） and butyl acrylate（BA） via the free radical polymerization leading to PP-g-PMSB and non-graft polymer（PMSB′） in water suspension system.The results indicate that the graft ratio of PP-g-PMSB and content of PMSB′ increases as the monomer content increases,and when the graft ratio of the product PP-g-PMSB is above 5.25%,the traces of gel are seen generated.All these ternary-monomers are grafted onto PP as longer chain branches.The thermal stability and polarity of PP-g-PMSB increase along with the increase of graft ratio,but the melt flow rate decreases.The water contact angle of the PP-g-PMSB is 79.52° when graft ratio is 5.50%,decreases to 69.62° with 3.25% PMSB′.
参考文献
| [1] | Wang, J;Wang, DF;Du, W;Zou, EG;Dong, Q .Synthesis of Functional Polypropylene Via Solid-Phase Grafting Soft Vinyl Monomer and Its Mechanism[J].Journal of Applied Polymer Science,2009(3):1803-1810. |
| [2] | Ying Li;Xu-Ming Xie;Bao-Hua Guio .Study on styrene-assisted melt free-radical grafting of maleic anhydride onto polypropylene[J].Polymer: The International Journal for the Science and Technology of Polymers,2001(8):3419-3425. |
| [3] | 张艳,程捷,郭正虹,闫红强,方征平.马来酸酐/丙烯酸丁酯双单体接枝聚丙烯[J].高分子材料科学与工程,2009(04):4-7. |
| [4] | 祝宝东,王鉴,秦占占,董群.水悬浮自搅拌体系中聚丙烯接枝双单体丙烯酸和苯乙烯[J].塑料工业,2009(01):6-9,25. |
| [5] | 张艳中,范志强,刘钊,张玉清,封麟先.球形聚丙烯粒子固相接枝苯乙烯的研究[J].高分子学报,2002(04):432-437. |
| [6] | 王鉴,冉玉霞,邹恩广,董群,王洪亮.超临界CO2协助三单体接枝改性聚丙烯[J].化学学报,2009(10):1141-1146. |
| [7] | Robin JJ;Boyer C;Boutevin B;Loubat C .Synthesis and properties of polyolefin graft copolymers by a grafting "onto" reactive process[J].Polymer: The International Journal for the Science and Technology of Polymers,2008(21):4519-4528. |
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