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中国精品科技期刊2020
朱芊, 肖满, 陈茜, 姜发堂, 严文莉. 几种增塑剂与乳化剂对魔芋葡甘聚糖/乙基纤维素共混膜机械性质的影响[J]. 食品工业科技, 2016, (22): 320-323. DOI: 10.13386/j.issn1002-0306.2016.22.054
引用本文: 朱芊, 肖满, 陈茜, 姜发堂, 严文莉. 几种增塑剂与乳化剂对魔芋葡甘聚糖/乙基纤维素共混膜机械性质的影响[J]. 食品工业科技, 2016, (22): 320-323. DOI: 10.13386/j.issn1002-0306.2016.22.054
ZHU Qian, XIAO Man, CHEN Xi, JIANG Fa-tang, YAN Wen-li. Effects of plasticizers and emulsifiers on mechanical properties of konjac glucomannan / ethyl cellulose blend films[J]. Science and Technology of Food Industry, 2016, (22): 320-323. DOI: 10.13386/j.issn1002-0306.2016.22.054
Citation: ZHU Qian, XIAO Man, CHEN Xi, JIANG Fa-tang, YAN Wen-li. Effects of plasticizers and emulsifiers on mechanical properties of konjac glucomannan / ethyl cellulose blend films[J]. Science and Technology of Food Industry, 2016, (22): 320-323. DOI: 10.13386/j.issn1002-0306.2016.22.054

几种增塑剂与乳化剂对魔芋葡甘聚糖/乙基纤维素共混膜机械性质的影响

Effects of plasticizers and emulsifiers on mechanical properties of konjac glucomannan / ethyl cellulose blend films

  • 摘要: 本文研究不同增塑剂或乳化剂的添加对魔芋葡甘聚糖/乙基纤维素复合膜(KE)机械性质的影响及其作用机理。结果表明,随着不同种类的增塑剂(癸二酸二丁酯、环氧大豆油、柠檬酸三乙酯)添加量的增加(5%~35%,w/w),复合膜的拉伸强度表现为先升高后降低(p<0.05),而断裂伸长率呈现先降低后回升的趋势。乳化剂的添加(0.1%~0.9%,w/w)对于复合膜的拉伸强度不会产生显著影响,但其含量的增加会导致断裂伸长率先升高后降低(p<0.05)。癸二酸二丁酯添加量为20%时复合膜拉伸强度达到最大82.37 MPa。乳化剂司盘80添加量为0.7%时,断裂伸长率达到最大19.78%。基于以上结果,对增塑剂与乳化剂在KE膜上的作用机理进行了猜想并建立了假设模型。 

     

    Abstract: The impacts of the addition of different plasticizers and emulsifiers on mechanical properties of konjac glucomannan / ethyl cellulose( KE) blend films,and the mechanisms were mainly investigated in this study. Results indicated that the film had a first increase and later a decrease on tensile strength( TS)( p < 0.05),and a first decrease but later increase trend on elongation ratio at breaking( EAB),with increased addition( 5% ~35%,w / w)of plasticizers( dibutyl sebacate,epoxidized soybean oil,and triethyl citrate). The addition( 0.1% ~ 0.9%,w / w) of emulsifiers( span 80,sucrose fatty acid ester,and Tween 80) did not show significant impact on TS of KE film,but would lead to a first increase and later a decrease on EAB( p < 0.05).The TS of the blend film reached to 82.37 MPa when 20% dibutyl sebacate was addicted,as the EAB reached to 19.78% when 0.7% span 80 was addicted.Based on these results,a hypothesis model was proposed and an assumption of the mechanisms of plasticizers' and emulsifiers' impact on KE film was made.

     

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