小麦款质针形硅酸盐纳米复合材料的制备与性能(阅).pdfVIP

Vo l. 35 No.6 华东理工大学学报(自然科学版) 2009-12 Journal of East China University of Science and Technology (Natural Science Edition) 845 文章编号:1006-3080(2009)06-0845-05 小麦款质-针形硅酸盐纳米复合材料的制备与性能 陆吴斌， 袁养龙 (华东理工大学材料科学与工程学院，超细材料制备与应用教育部重点实验室，上海 200237) 摘要:通过湿法工艺在小麦款质中加入一定量的凹凸棒，经冷冻干燥和热模压方法制备了小麦 款质-凹凸棒纳米复合材料。研究发现:凹凸棒在小麦款质中能均匀分散，且当凹凸棒质量分数为 7% 时，复合材料拥有较好的力学性能。同时，不同复合材料的降解实验结果表明，该复合材料在土 中埋 10 d 后，质量降解为原来的 50% ， 20 d 后只剩下原来的 20%左右。通过在小麦款质中加入凹 凸棒所得到的复合材料提高了小麦款质的力学性能，是一种可降解复合材料。 关键词:小麦款质;凹凸棒;纳米复合材料;热模压;可生物降解性 中图分类号:TQ321. 2 文献标志码:A Preparation and Properties of Wheat Gluten jNeedle-Like SiIicate Nanocomposites LU Wu-bin , YUAN Qiao-long (Key Laboratory for Ultrafine Materials of Ministry of Education , School of Materials Science and Engineering , East China University of Science and Technology , Shanghai 200237 , China) Abslracl: In this work , wheat gluten (WG) was reinforced with attapulgite (ATT) to form a nanocomposites through wet process , freeze-drying and thermally compression molding process. TEM and SEM images indicated that the attapulgites were uniformly distributed in the matrix. The mechanical properties of wheat gluten-attapulgite nanocomposites reached the maximum strength when the addition of attapulgite was 7 %. The biodegradation tests of W G-ATT nanocomposites showed that the mass of the nanocomposites lost 50 % after buried beneath soil for 10 d , and lost over 80 % in 20 d. The results showed that the mechanical properties and biodegradability of wheat gluten material could be improved through the formation of nanocomposite with attapulgite. Key words: wheat gluten; attapulgite; nanocomposits; thermall