聚乙烯醇-微晶纤维素-六方氮化硼复合膜制备及性能

doi:10.3969/j.issn.1673-5854.2019.03.002

生物质化学工程 ›› 2019, Vol. 53 ›› Issue (3): 8-14.doi: 10.3969/j.issn.1673-5854.2019.03.002

聚乙烯醇-微晶纤维素-六方氮化硼复合膜制备及性能

葛鑫,程厚富,黄森涛,陈静雯,付甫秀,陈循军,葛建芳*()

仲恺农业工程学院化学化工学院, 广东广州 510225 College of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China

收稿日期:2018-07-24 出版日期:2019-05-30 发布日期:2019-06-04
通讯作者: 葛建芳 E-mail:ge650704@163.com
作者简介:葛鑫(1992—)，男，河南三门峡人，硕士生，主要从事导热界面材料研究
基金资助:
广东省应用型科技研发专项资金项目(2015B090925022);广东省工艺研究与能力建设项目(2016A010103037);仲恺农业工程学院研究生科技创新基金资助项目(KJCX2017007)

Preparation and Characterizations of Polyvinyl Alcohol-microcrystalline Cellulose-hexagonal Boron Nitride Composite Membrane

Xin GE,Houfu CHENG,Sentao HUANG,Jingwen CHEN,Fuxiu FU,Xunjun CHEN,Jianfang GE*()

Received:2018-07-24 Online:2019-05-30 Published:2019-06-04
Contact: Jianfang GE E-mail:ge650704@163.com
Supported by:
广东省应用型科技研发专项资金项目(2015B090925022);广东省工艺研究与能力建设项目(2016A010103037);仲恺农业工程学院研究生科技创新基金资助项目(KJCX2017007)

摘要/Abstract

摘要：

菠萝叶通过预酸浸、碱煮，后酸解制备得到微晶纤维素(MCC)，探讨了硫酸质量分数、酸解温度和时间对反应的影响，结果表明制备MCC最佳条件为硫酸质量分数64%、酸解温度45 ℃、酸解时间90 min。利用六方氮化硼(h-BN)对MCC进行处理，制备得到h-BN-MCC复合粉体。通过傅里叶变换红外光谱(FT-IR)、扫描电子显微镜(SEM)、热失重(TG)分析对所得MCC进行表征。结果表明：红外光谱图的特征峰与参考文献一致，当温度升高至700 ℃时质量损失率为97%，制得的菠萝叶MCC长度为几到二十几微米不等，直径为2~3 μm。后将复合粉体分散于聚乙烯醇(PVA)制备h-BN-MCC-PVA复合膜。利用万能拉力机、接触角测试等方法对上述产物进行表征。结果分析表明：MCC能够很好地辅助h-BN与PVA复合，使h-BN-MCC-PVA复合膜的力学性能得到改善，拉伸强度和断裂伸长率最大能够分别增加15.1%和122.0%，并且增强了薄膜疏水性，将接触角从34.91°提高至52.28°。

关键词: 农业废弃物, 菠萝叶微晶纤维素, 氮化硼, 聚乙烯醇, 复合材料

Abstract:

Microcrystalline cellulose(MCC) was extracted from pineapple leaf fibrous by means of pre-acid immersion, alkaline extraction and acid hydrolysis and the influences of mass fraction of sulfuric acid solution, temperature and reaction time on the reaction were discussed. The results showed that the optimum preparation conditions of MCC were mass fraction of sulfuric acid 64%, reaction temperature 45 ℃ and reaction time 90 min. Hexagonal boron nitride(h-BN) was used to modified MCC in order to gain h-BN-MCC composite powder. The products were mainly characterized by Fourier transform infrared spectroscopy(FT-IR), scanning electron microscopy(SEM) and thermogravimetic analysis(TG). The results showed that the infrared spectrogram characteristic peaks were consistent with the reference and the mass loss of cellulose microcrystalline was 97% when the temperature raised to 700 ℃. The whisker lengths were about several to twenty microns and the diameters were 2-3 μm.Then the composite powder was dispersed in polyvinyl alcohol(PVA) to prepare h-BN-MCC-PVA composite membrane. Tensile strength and contact angle test were used to characterize the membrane. MCC could assist h-BN to compound with PVA well and tensile strength and elongation at break of h-BN-MCC-PVA composite membrane could be increased by 15.1% and 122.0% respectively. And the composite powder could enhance the hydrophobicity of the film and the contact angle could increase from 34.91° to 52.28°.

Key words: agricultural wastes, pineapple leaf fibrous microcrystalline, boron nitride, polyvinyl alcohol, composite

中图分类号:

TQ35
O647.4

葛鑫,程厚富,黄森涛,陈静雯,付甫秀,陈循军,葛建芳. 聚乙烯醇-微晶纤维素-六方氮化硼复合膜制备及性能[J]. 生物质化学工程, 2019, 53(3): 8-14.

Xin GE,Houfu CHENG,Sentao HUANG,Jingwen CHEN,Fuxiu FU,Xunjun CHEN,Jianfang GE. Preparation and Characterizations of Polyvinyl Alcohol-microcrystalline Cellulose-hexagonal Boron Nitride Composite Membrane[J]. Biomass Chemical Engineering, 2019, 53(3): 8-14.

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参考文献 16

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样品sample	H₂SO₄质量分数/% mass fraction of H₂SO₄	现象 phenomenon
1	56	明显分层，下层为白色颗粒obviously layered, the lower layer is white particles
2	60	明显分层，下层为白色颗粒obviously layered, the lower layer is white particles
3	64	微分层，乳白色悬浮液mildly layered, milky white suspension
4	68	无分层，黄色半透明溶液no stratification, yellow translucent solution
5	72	无分层，黄褐色透明溶液no stratification, tan transparent solution

样品sample	酸解温度/℃ acid decomposition temperature	现象 phenomenon
6	25	明显分层，下层为白色颗粒obviously layered, the lower layer is white particles
7	35	明显分层，下层为白色颗粒obviously layered, the lower layer is white particles
8	45	微分层，乳白色悬浮液mildly layered, milky white suspension
9	55	无分层，黄色透明溶液no stratification, yellow translucent solution
10	65	无分层，黄褐色透明溶液no stratification, tan transparent solution

样品 sample	酸浸时间/min reaction time	现象 phenomenon
11	30	明显分层，下层为白色颗粒obviously layered, the lower layer is white particles
12	60	明显分层，下层为白色颗粒obviously layered, the lower layer is white particles
13	90	微分层，乳白色悬浮液mildly layered, milky white suspension
14	120	无分层，黄色半透明溶液no stratification, yellow translucent solution
15	150	无分层，黄褐色透明溶液no stratification, tan transparent solution

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聚乙烯醇-微晶纤维素-六方氮化硼复合膜制备及性能

Preparation and Characterizations of Polyvinyl Alcohol-microcrystalline Cellulose-hexagonal Boron Nitride Composite Membrane

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