大豆蛋白改性脲醛树脂胶的合成及降解性研究

doi:10.3969/j.issn.1000-2006.2014.01.017

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南京林业大学学报（自然科学版） ›› 2014, Vol. 38 ›› Issue (01): 97-102.doi: 10.3969/j.issn.1000-2006.2014.01.017

大豆蛋白改性脲醛树脂胶的合成及降解性研究

孙恩惠,黄红英,武国峰,常志州^*

江苏省农业科学院农业资源与环境研究所,江苏省农业废弃物资源化工程技术研究中心,江苏南京 210014

出版日期:2014-01-15 发布日期:2014-01-15
基金资助:
收稿日期:2012-10-10 修回日期:2013-06-03
基金项目:国家农业行业科技计划农村废弃物循环利用技术研究集成与示范(200903011-01); 江苏省科技支撑计划(BE2011405)
第一作者:孙恩惠,助理研究员,硕士。*通信作者:常志州,研究员。E-mail:czhizhou@hotmail.com。
引文格式:孙恩惠,黄红英,武国峰,等. 大豆蛋白改性脲醛树脂胶的合成及降解性研究[J]. 南京林业大学学报:自然科学版,2014,38(1):97-102.

Synthesis and biodegradation characteristics of urea-formaldehyde resin modified with soy protein

SUN Enhui,HUANG Hongying,WU Guofeng,CHANG Zhizhou^*

Jiangsu Agricultural Waste Treatment and Recycle Engineering Research Center,Institute of Agricultural Resources and Environment,Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China

Online:2014-01-15 Published:2014-01-15

摘要/Abstract

摘要： 以碱水解后的大豆分离蛋白(SPI)为改性剂,替代一定量的尿素,制备大豆分离蛋白改性脲醛树脂,以改善脲醛树脂的胶合强度、游离甲醛释放及储存稳定性。分析了SPI的甲醛反应能力,以及改性脲醛树脂的胶合强度、热稳定性和生物降解性。结果表明,当SPI水解时间40 min,甲醛的反应能力达到59.23 mg/g,水解SPI尿素替代率对脲醛树脂的黏结性影响最大; 当水解温度85 ℃,SPI取代尿素质量的15%时,优化后的树脂胶合强度达1.16 MPa。DSC分析表明改性树脂(SPI/UF)与脲醛树脂(UF)相比,比热容差减少了18.7%,SPI/UF树脂具有较好的热稳定性。SPI/UF树脂经微生物接种培养后,20 d时树脂表层有霉菌生成。

Abstract: The object of this research was to provide a new approach for improving the adhesion performance of UF adhesive by modification with a small amount of soy protein. The optimum addition level of soy proteiniselate(SPI), as well as the adhesion performance, such as the bonding strength, free formaldehyde content and conformation change of SPI/UF adhesive had been investigated by the orthogonal balance block test of L₉(3⁴).The thermal performance of SPI/UF copolymer resin was characterized by differential scanning calorimetry, and the biodegradability of SPI/UF resin was preliminarily analyzed. The results showed that the bonding strength of SPI/UF resin was 1.16 MPa in the condition of hydrolysis at 85 ℃ for 40 min and urea substitution ratio of 15% by SPI. Thermal stability of the resin increased through SPI modification. A small amount of fungus colonies had become visible in the surface of SPI/UF resin after inoculation of microorganisms, which indicated the modified resin had gained a certain degree of biodegradability.

中图分类号:

TQ321

孙恩惠,黄红英,武国峰,等. 大豆蛋白改性脲醛树脂胶的合成及降解性研究[J]. 南京林业大学学报（自然科学版）, 2014, 38(01): 97-102.

SUN Enhui,HUANG Hongying,WU Guofeng,CHANG Zhizhou. Synthesis and biodegradation characteristics of urea-formaldehyde resin modified with soy protein[J].Journal of Nanjing Forestry University (Natural Science Edition), 2014, 38(01): 97-102.DOI: 10.3969/j.issn.1000-2006.2014.01.017.

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大豆蛋白改性脲醛树脂胶的合成及降解性研究

Synthesis and biodegradation characteristics of urea-formaldehyde resin modified with soy protein

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