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聚乙烯醇--碱木质素发泡材料的制备与性能

罗华超 任世学 马艳丽 方桂珍

罗华超, 任世学, 马艳丽, 方桂珍. 聚乙烯醇--碱木质素发泡材料的制备与性能[J]. 北京林业大学学报, 2015, 37(4): 127-134. doi: DOI:10.13332/j.1000-1522.20140347
引用本文: 罗华超, 任世学, 马艳丽, 方桂珍. 聚乙烯醇--碱木质素发泡材料的制备与性能[J]. 北京林业大学学报, 2015, 37(4): 127-134. doi: DOI:10.13332/j.1000-1522.20140347
LUO Hua-chao, REN Shi-xue, MA Yan-li, FANG Gui-zhen. Preparation and properties of polyvinyl alcohol-alkali lignin foam material (PLFM)[J]. Journal of Beijing Forestry University, 2015, 37(4): 127-134. doi: DOI:10.13332/j.1000-1522.20140347
Citation: LUO Hua-chao, REN Shi-xue, MA Yan-li, FANG Gui-zhen. Preparation and properties of polyvinyl alcohol-alkali lignin foam material (PLFM)[J]. Journal of Beijing Forestry University, 2015, 37(4): 127-134. doi: DOI:10.13332/j.1000-1522.20140347

聚乙烯醇--碱木质素发泡材料的制备与性能

doi: DOI:10.13332/j.1000-1522.20140347
基金项目: 

“十二五”国家科技支撑计划项目(2012BAD24B0403)、国家自然科学基金项目(30901135)。

详细信息
    作者简介:

    第一作者: 罗华超。主要研究方向:天然高分子化学。Email:1075168344@qq.com 地址:150040黑龙江省哈尔滨市和兴路26号东北林业大学材料科学与工程学院。责任作者: 任世学,博士,副教授。主要研究方向:天然高分子化学。Email:renshixue@nefu.eud.cn 地址:同上。

    第一作者: 罗华超。主要研究方向:天然高分子化学。Email:1075168344@qq.com 地址:150040黑龙江省哈尔滨市和兴路26号东北林业大学材料科学与工程学院。责任作者: 任世学,博士,副教授。主要研究方向:天然高分子化学。Email:renshixue@nefu.eud.cn 地址:同上。

Preparation and properties of polyvinyl alcohol-alkali lignin foam material (PLFM)

  • 摘要: 为改善发泡材料存在的力学性能较差、成本高的现状,同时增加碱木质素的利用率,制备高性能的发泡材料,以聚乙烯醇(PVA)和碱木质素为原料,甲醛为交联剂,采用无机发泡原理,制备了聚乙烯醇--碱木质素发泡材料(PLFM),并测定其相关性能。结果表明:相对于PVA用量,碱木质素质量分数为33%、甲醛4/5(mL/g)、硫酸6/5(mL/g),固化温度为120℃时制备的发泡材料拉伸强度最大为25.91MPa,比纯聚乙烯醇泡沫材料的4.32MPa有了显著提升。不同聚合度PVA制备发泡材料:PVA0588聚合度较低,无法形成泡体;PVA1788-PLFM和PVA2488-PLFM相比,PVA2488-PLFM具有更好的拉伸强度,而且表观密度及吸水倍率更小。FTIR显示碱木质素与PVA均发生交联,大多发生在苯环5位上,与PVA2488交联效果好。SEM显示PVA2488-PLFM具有更好的孔隙结构。热分析中,DSC显示PVA1788-PLFM中有填充剂存在的木质素,PVA2488-PLFM中没有,表明PVA2488-PLFM的生物相容性好;TG和DTG显示,PVA2488-PLFM热失重最剧烈时温度为379℃,高于PVA1788-PLFM的360℃,但800℃时失重率为95.94%高于PVA1788-PLFM的80.13%,说明PVA2488-PLFM耐热性好,且易热降解。综上,PVA2488-PLFM的性能更佳。

     

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出版历程
  • 收稿日期:  2014-09-17
  • 修回日期:  2014-10-14
  • 刊出日期:  2015-04-30

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