Soybean meal-based wood adhesives enhanced by modified polyacrylic acid solution
Soybean meal-based wood adhesives enhanced by modified polyacrylic acid solution
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DOI：
10.15376/biores.7.1.0946-0956
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发表时间：
2012-01
期刊：
影响因子：
1.5
通讯作者：
Q. Gao;S. Shi;Jianzhang Li;Kaiwen Liang;Xiumei Zhang
中科院分区：
文献类型：
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作者：
Q. Gao;S. Shi;Jianzhang Li;Kaiwen Liang;Xiumei Zhang
研究了十二烷基硫酸钠（SDS）和改性聚丙烯酸溶液（MPA）对豆粕胶粘剂的作用。制造三层胶合板试样以测量粘合剂的耐水性（三循环浸泡试验）。测定了胶粘剂的粘度和固含量。采用扫描电子显微镜（SEM）和傅里叶变换红外光谱（FTIR）分别对固化后胶粘剂的截面和官能团进行了表征。结果表明，SDS可使豆粕胶粘剂的耐水性能提高30%。加入MPA后，豆粕/SDS/MPA胶粘剂的耐水性进一步提高了60%，粘度降低了81%，固含量提高了15%。用豆粕/SDS/MPA胶粘剂粘接的胶合板满足室内胶合板的要求。SEM结果表明，固化后的豆粕/SDS/ MPA胶粘剂的横截面上没有孔洞和裂纹。FTIR分析表明，随着MPA的引入，固化后的胶粘剂中形成了更多的肽键。
sodium dodecyl sulfate (SDS) and a modified polyacrylic acid solution (MPA) on a soybean meal adhesive were investigated. Three-ply plywood specimens were fabricated to measure the water resistance of the adhesive (three-cycle soak test). The viscosity and solid content of the adhesive were measured. The cross-section and functional groups of the cured adhesive were evaluated using scanning electron microscope (SEM) and Fourier transform infrared (FTIR) spectroscopy, respectively. The results showed that using SDS improved the water resistance of the soybean meal adhesive by 30%. After incorporating MPA, the water resistance of the soybean meal/SDS/MPA adhesive was further improved by 60%, the viscosity of the adhesive was reduced by 81%, and the solid content of the adhesive increased by 15%. The plywood bonded by the soybean meal/SDS/MPA adhesive met the interior plywood requirements. SEM results showed no holes and cracks on the cross-section of the cured soybean meal/SDS/ MPA adhesive. FTIR analysis indicated that more peptide linkages were formed in the cured adhesive as MPA was incorporated.