酶解可溶性淀粉改性酚醛树脂的研究  

Study on Enzymatic Hydrolysis of Soluble Starch Modified Phenolic Resin

作　　者：张亚伟 陈爱炳 甘卫星 侯志兵 方建林 丛日尧 覃琼林 Zhang Yawei;Chen Aibing;Gan Weixing;Hou Zhibing;Fang Jianlin;Cong Riyao;Qin Qionglin(College of Resources,Environment and Materials,Guangxi University,Nanning,Guangxi 530004,China;College of Environment and Resources,Guangxi Normal University,Guilin,Guangxi 541004,China;Guangxi Forestry Group,Nanning,Guangxi 530022,China)

机构地区：[1]广西大学资源环境与材料学院,广西南宁530004 [2]广西师范大学环境与资源学院,广西桂林541004 [3]广西林业集团,广西南宁530022

出　　处：《广西林业科学》2021年第3期281-286,共6页Guangxi Forestry Science

基　　金：广西科技重大专项(桂科AA17204067,桂科AA18118044);国家科技支撑计划项目(2015BAD14B03);国家自然科学基金项目(31360158)。

摘　　要：为改善酚醛树脂性能并降低其成本,以可溶性淀粉(Starch,S)、α-淀粉酶、苯酚(Phenol,P)和甲醛(Formaldehyde,F)为原料合成酶解淀粉改性酚醛(Enzymatic hydrolysis starch modified phenol formaldehyde,ESPF)树脂,采用单因素法探讨酶解淀粉产物(Enzymatic hydrolysis of soluble starch products,ES)添加量、甲醛、氢氧化钠与苯酚的比例以及聚合温度对ESPF树脂性能的影响。结果表明,酶解液添加量5%、n(F)∶n(NaOH)∶n(P)=1.9∶0.3∶1、聚合温度90°C时,合成的树脂效果较好,湿状胶合强度1.35 MPa,游离甲醛含量0.11%,贮存期44天。FT-IR分析表明,酶解淀粉产物含有麦芽糖或糊精等多糖,且参与了树脂的合成反应。DSC分析表明,ES使ESPF树脂固化的起始温度升高,固化变难,但放出的热量增加,树脂的固化程度增加。In order to improve properties of phenolic resin and decrease cost,enzymatic hydrolysis starch modi⁃fied phenol formaldehyde(ESPF)was synthesized from soluble starch(S),α-amylase,phenol(P)and formalde⁃hyde(F).Effects of amount of enzymatic hydrolysis of soluble starch products(ES),molar ratio of formaldehyde,sodium hydroxide and phenol and polymerization temperature on properties of ESPF resin were investigated by single factor method.Results showed that synthesized phenolic resin had better effect when the amount of ES was 5%,n(F)∶n(NaOH)∶n(P)=1.9∶0.3∶1 and polymerization temperature was 90℃with wet bonding strength 1.35 MPa,free formaldehyde content 0.11%and storage period 44 d.FT-IR analysis showed that hydrolyzed starch products contained polysaccharides such as maltose or dextrin,and participated in synthesis reaction of resin.DSC analysis showed that addition of ES increased initial curing temperature of ESPF resin and made it difficult to cure,but heat release increased and curing degree of ESPF resin increased.

关 键 词：改性 淀粉 Α-淀粉酶 ESPF树脂 

分 类 号：TQ43[化学工程]