摘要
采用10.0g·kg-1的十二烷基硫酸钠(SDS)改性质量分数为250.0g·kg-1的大豆粉浆液,制成SDS改性大豆基木材胶黏剂(SF),运用单因素和正交试验法考察了pH值、反应温度和反应时间对改性SF胶耐水胶合强度的影响。试验结果表明,SDS改性大豆基木材胶黏剂的最佳工艺:pH8,反应温度35℃,反应时间4h。改性后的SF胶Ⅱ类耐水胶合强度为0.70MPa。由红外光谱分析可知,SDS改性使大豆蛋白质分子大量的非极性基团外露,增加了蛋白质分子的疏水性,提高了改性SF胶的耐水胶合强度。
A 10.0 g.kg 1 concentration of sodium dodecyl sulfate （SDS） was applied to a watery soy flour paste having a mass fraction of 250.0 g·kg^-1 to produce SDS-modified soy-based wood adhesives. The hydrophobic adhesive properties of these modified soy-based adhesives were tested for pH, temperature, and reaction time; an infrared spectrum analysis was also conducted. Test results showed that the optimum parameters were a pH of 8, temperature of 35 ℃, and a reaction time of 4 h. Infrared spectrum analysis showed that SDS-modification moved some inner hydrophobic side chains outward thereby increasing water resistance and hydrophobic adhesion strength. [Ch, 4 fig. 3 tab. 10 ref. ]
出处
《浙江林学院学报》
CAS
CSCD
北大核心
2008年第6期772-776,共5页
Journal of Zhejiang Forestry College
基金
国家自然科学基金资助项目(30671220)
福建省科学技术厅资助项目(K04044)
关键词
林业工程
大豆粉
十二烷基硫酸钠
木材胶黏剂
耐水胶合强度
forest engineering
soy flour
sodium dodecyl sulfate （ SDS ）
wood adhesive
hydrophobic adhesion strength
