交联型聚酞胺11/乙烯-乙烯醇共聚物高阻透材料的研究

doi:10.19491/j.issn.1001-9278.2008.01.007

中国塑料 ›› 2008, Vol. 22 ›› Issue (1): 35-39 .DOI: 10.19491/j.issn.1001-9278.2008.01.007

交联型聚酞胺11/乙烯-乙烯醇共聚物高阻透材料的研究

丁正亚，王标兵，李迎春，杨云峰，胡国胜

中北大学高分子与生物工程研究所，山西太原030051

收稿日期:2007-08-15 修回日期:1900-01-01 出版日期:2008-01-26 发布日期:2008-01-26

Study on Cross-linked PAll /EVOH Composites with High-barrier Property

DING Zheng-ya，WANG Biao-bing，LI Ying-chun，YANG Yun-feng，HU Guo-sheng

Institute of Macromolecules&Bioengineering, North University of China, Taiyuan 030051，China

Received:2007-08-15 Revised:1900-01-01 Online:2008-01-26 Published:2008-01-26
Contact: HU Guo-sheng

摘要/Abstract

摘要： 采用原位交联技术制备聚醚胺11(PA11)/乙烯-乙烯醉共聚物(EVOH)高阻透材料，以过氧化二异丙苯(DCP)为交联剂，研究其用量对体系凝胶含量、力学性能、阻透性能及形态结钩的影响。结果表明:随着DCP含量的增加，体系的冲击强度、拉伸强度、凝胶含量、阻透性能均呈现先升高后降低的趋势;红外光谱(FT-IR)表明，PA11末端段基和EVOH的侧经基反应生成了酯基;差示扫描(DCP)分析表明，体系的玻璃化转变温度随着DCP含量的增加先升高后降低;扫描电子显微镜(SEM)分析显示：DCP含量对EVOH在PA11中分散形态有很大的影响，DCP的质量分数为1.5%时，EVOH以相互交叠的不连续的片层状结钩分散于PAII树脂中，其力学性能和阻透性能得到大幅度的提高。

关键词: 聚醚胺11, 乙烯-乙烯醉共聚物, 过氧化二异丙苯, 原位交联, 阻透性能

Abstract: High-barrier polyamide 11 /ethylene-vinyl alcohol (PA11/EVOH) copolymer composites were prepared via in situ crosslinking induced by dicumyl peroxide (DCP).The effect of dosage of DCP on the gel content，mechanical property, barrier property and morphology was investigated.It showed that the impact strength, tensile strength and gel content initially increased and then reduced with increasing loading of the DCP. FT-IR analysis indicated that the ester groups were formed from the reaction betwecn carboxyl end groups in polyamidcl l and hydroxyl groups in FVOH. DSC showed that the glass transition temperature(Tg) decreased with increasing DCP content. SFM observation revealed that the DCP loading had a great influence on the morphology of FVOH within PA11 matrix. The discontinuous mutual crossover laminar structure of FVOH was developed when DCP loading was 1 .5，in which the mechanical property and barrier property were improved prodigiously.

Key words: polyamidc 11;ethylene-vinyl alcohol copolymer, dicumyl peroxide, in situ crosslinliing, barrier property

丁正亚, 王标兵, 李迎春, 杨云峰, 胡国胜. 交联型聚酞胺11/乙烯-乙烯醇共聚物高阻透材料的研究 [J]. 中国塑料, 2008, 22(1): 35-39 .

DING Zheng-ya, WANG Biao-bing, LI Ying-chun, YANG Yun-feng, HU Guo-sheng. Study on Cross-linked PAll /EVOH Composites with High-barrier Property[J]. China Plastics, 2008, 22(1): 35-39 .

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交联型聚酞胺11/乙烯-乙烯醇共聚物高阻透材料的研究

Study on Cross-linked PAll /EVOH Composites with High-barrier Property

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