LEI Wen,YANG Tao,XU Jin-bao,et al.Preparation of Bio-Adhesive Based on Soybean via Co-polymerization Method[J].Soybean Science,2010,29(02):299-301,305.[doi:10.11861/j.issn.1000-9841.2010.02.0299]
共聚改性大豆蛋白制备胶粘剂的研究
- Title:
- Preparation of Bio-Adhesive Based on Soybean via Co-polymerization Method
- 文章编号:
- 1000-9841（2010）02-0299-03
- 分类号:
- TQ432.7
- 文献标志码:
- A
- 摘要:
- 采用改性剂MF处理大豆蛋白(SPI)，用马来酸酐（MA）接枝改性后，与苯乙烯(St)发生共聚制备胶粘剂，研究了配方及反应温度对胶粘剂耐水胶接强度及粘度的影响。增加SPI的用量，胶粘剂的粘度将逐渐增大，耐水胶合强度起初增加迅速，之后增加趋势变缓；增加改性剂的用量，胶粘剂粘度与耐水胶合强度都呈先下降后上升趋势；当MA用量为1.5 g时，胶粘剂的粘度最小，而用量为4.5 g时，胶粘剂的粘度最大，随着MA用量的增加，胶粘剂耐水胶合强度先上升而后大幅下降；St用量对胶粘剂粘度的影响较复杂，但耐水胶合强度却随着St用量的增加先上升后下降，当St用量为20 mL时，耐水胶合强度达到最大值2.78 MPa；当引发剂的量为0.05 g(1mL苯乙烯)时，胶粘剂的耐水胶合强度出现最大值2.79 MPa，且此时粘度仅为12 MPa·S,对施胶影响不大。最终确定最佳反应条件为：SPI 15 g、MF 6.5%（相对于SPI）、MA 3.0 g,St 20 mL, 引发剂0.05 g（1 mL St用量),反应温度70°C。
- Abstract:
- After being treated with modifier （MF）,the soy protein was grafted with maleic anhydride(MA),and then co-polymerized with styrene(St) to prepare bio-adhesive,the original viscosity and its water-resistant bonding strength(WRBS) of the adhesive were investigated respectively,the optimal synthesis conditions are concluded as: 15g SPI, 6.5%(compared with that of SPI) MF, 3.0 g MA, 20 mL St, 0.05g/(1mL St)initiator,reaction temperature 70°C。With the increase of the dosage of SPI,the viscosity of the adhesive will be accordingly increased and WRBS increases dramatically at first and then slowly；increasing the dosage of the modifier will make both the viscosity and WRBS decrese first and then increase;when 1.5g MA is added,the adhesive has the least viscosity ,while it has the most one when 4.5g MA is used,WRBS of the adhesive will increase first and then decrease dramatically with the increasing dosage of MA;though the effect of the dosage of St on the viscosity of the adhesive is complicated,the adhesive will have the greatest WRBS of 2.78 MPa when 20 mL St is used;as the initiator is regarded,0.05g initiator in 1mL St makes the viscosity have the greatest WRBS of 2.79 MPa,and the viscosity is only 12MPa·S in this situation,which has little effect on the coating process.
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备注/Memo
基金项目：江苏省高校大学生实践创新资助项目(苏教高〔2009〕30号)，南京林业大学大学生科技创新资助项目（200951，200994）。