淀粉/单体比例及酸解条件对高淀粉含量木材胶性能的影响
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Effects of Starch/VAc Monomerratio and Acidolysis Condition on Wood Adhesive Contains Large Amounts of Starch
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    摘要:

    研究了淀粉与单体质量比对淀粉木材胶粘结性能、接枝参数、贮藏稳定性的影响。结果表明:当淀粉/单体质量比为7∶3时,较常规比例(淀粉/单体质量比为5∶5)下接枝率、接枝效率与干强度分别下降23.8%、21.1%和8.6%,经受冻融循环减少4次,但淀粉用量提高了40%,增加了环保性能。在此基础上,研究了酸解条件对淀粉/单体质量比为7∶3的木材胶性能的影响,综合考虑贮藏稳定性、粘结强度,选择酸解时间为2 h制备高淀粉含量木材胶,并对酸解作用影响淀粉胶性能及接枝共聚反应的机理进行了分析。

    Abstract:

    The effects of starch/VAc(vinyl acetate) monomerratio on the shear strength, grafted parameter and storage stability of starch-based wood adhesive were studied. It was shown that, although the graft percentage, graft efficiency and dry shear strength of the starch adhesive produced when the starch/VAc monomerratio is 7∶3, respectively decreased by 23.8%, 21.1% and 8.6%, undergo freeze-thaw cycle four times less when compared with the conventional proportional (starch/VAc monomerratio is 5∶5), the amount of starch was increased by 40% which significantly improved the environmental performance, so the starch/VAc monomerratio was selected as 7∶3. And then acidolysis condition on the characteristics of wood adhesive contains large amounts of starch were studied. Comprehensive study of storage stability and bond strength, select acid hydrolysis time was 2 h. Then on this basis, the wood adhesive contains large amounts of starch was prepared. The action mechanism of acidolysis on characteristics of starch adhesive and graft copolymerization reaction was analyzed.

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郭海南,程力,顾正彪,李兆丰,洪雁.淀粉/单体比例及酸解条件对高淀粉含量木材胶性能的影响[J].食品与生物技术学报,2014,33(4):409-415.

GUO Hainan, CHENG Li, GU Zhengbiao, LI Zhaofeng, HONG Yan. Effects of Starch/VAc Monomerratio and Acidolysis Condition on Wood Adhesive Contains Large Amounts of Starch[J]. Journal of Food Science and Biotechnology,2014,33(4):409-415.

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  • 在线发布日期: 2014-10-19
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