新型含醛基两性聚氨酯复鞣剂的制备与性能
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摘要
以异佛尔酮二异氰酸酯(IPDI)、聚四氢呋喃醚二醇(PTMG)、2,4-二羟基苯甲醛(DDBA)、N-甲基二乙醇胺(N-MDEA)和2,2-二羟甲基丙酸(DMPA)为原料,通过聚加成反应制得一种新型含醛基两性聚氨酯(AAPU)复鞣剂.利用红外光谱(FT-IR)、纳米粒度仪和透射电镜分别对AAPU复鞣剂的结构、AAPU乳液的粒径、带电情况及胶粒形貌进行表征.再将AAPU复鞣剂应用于植鞣轻革的复鞣中,考察其对坯革与阴离子染料的结合能力及坯革性能的影响.结果表明,AAPU复鞣剂具有预期的结构.乳液平均粒径为42.6nm,等电点为5.16,具有明显的两性,乳胶粒呈较规则球型.复鞣试验结果表明,AAPU复鞣剂提高了坯革与阴离子染料的结合能力,经过AAPU复鞣剂处理后的坯革,其对染料的吸收率高达99%,染色浴液透明清亮;坯革染色均匀、色泽饱满,K/S值、坯革增厚率以及物理机械性能均高于传统丙烯酸树脂复鞣剂处理后的坯革,表明AAPU复鞣剂对植鞣轻革具有良好的复鞣性能.
An new amphoteric polyurethane retanning agent containing aldehyde groups(AAPU)was prepared by polyaddition reaction of isophorone diisocyanate(IPDI),polytetrahydrofuran glycol(PTMG),2,4-dihydroxybenzaldehyde,2,2-dihydroxymethylpropionic acid(DMPA)and N-methyldiethanolamine(N-MDEA).The structure of AAPU was characterized by FT-IR.The particle size,charge characteristic and morphology of latex particles were measured by nano particle size meter and transmission electron microscopy,respectively.Then,AAPU was applied as a retanning agent in less vegetable tanning system to investigate its effect on dye-binding capacity of the retanned vegetable leather and physical and mechanical properties of the crust leather.Results showed that the product had the expected structure.AAPU latex particles presented regular sphere with an average diameter of 42.6 nm.Its isoelectric point was 5.16.The application trial indicated that the AAPU retanning agent can improve the binding capacity between leather and anion dye in the retanning process.The dye absorption rate of the crust leather was up to 99%and the dyeing liquor was clear.Furthermore,color of the crust leather was uniform and full and its K/S value,thickening rate and physical-mechanical properties were higher than that of the retanned leather by acrylic resin retanning agent.The above results show that AAPU possesses the good retanning property in less vegetable tanning system.
An new amphoteric polyurethane retanning agent containing aldehyde groups(AAPU)was prepared by polyaddition reaction of isophorone diisocyanate(IPDI),polytetrahydrofuran glycol(PTMG),2,4-dihydroxybenzaldehyde,2,2-dihydroxymethylpropionic acid(DMPA)and N-methyldiethanolamine(N-MDEA).The structure of AAPU was characterized by FT-IR.The particle size,charge characteristic and morphology of latex particles were measured by nano particle size meter and transmission electron microscopy,respectively.Then,AAPU was applied as a retanning agent in less vegetable tanning system to investigate its effect on dye-binding capacity of the retanned vegetable leather and physical and mechanical properties of the crust leather.Results showed that the product had the expected structure.AAPU latex particles presented regular sphere with an average diameter of 42.6 nm.Its isoelectric point was 5.16.The application trial indicated that the AAPU retanning agent can improve the binding capacity between leather and anion dye in the retanning process.The dye absorption rate of the crust leather was up to 99%and the dyeing liquor was clear.Furthermore,color of the crust leather was uniform and full and its K/S value,thickening rate and physical-mechanical properties were higher than that of the retanned leather by acrylic resin retanning agent.The above results show that AAPU possesses the good retanning property in less vegetable tanning system.
引文
[1]魏世林.制革工艺学[M].北京:中国轻工业出版社,2012.
[2]Sivakumar V,Anusha P,Narayan R,et al.Untrasound-assisted process intensification in leather making:Diffusion rate enhancement in retanning process[J].Journal of the American Leather Chemistsassociation,2013,108(7):277-287.
[3]Chao W U,Zeng Y H,Liao X P,et al.Effect of retanning agents on dry heat resistance of leathers[J].Journal of the American Leather Chemists Association,2013,108(8):294-299.
[4]吕斌,贾潞,马建中,等.增深效应复鞣剂的研究进展[J].中国皮革,2014,43(21):45-47.
[5]Qiang T T,Chen L,Zhang Q,et al.A sustainable and cleaner speedy tanning system based on condensed tannins catalyzed by laccase[J].Journal of Cleaner Production,2018,197(1):1 117-1 123.
[6]陈武勇,李国英.鞣制化学[M].北京:中国轻工业出版社,2011.
[7]Brunstedt M R,Ziats N P,Schubert M,et al.Protein adsorption and endothelial cell attachment and proliferation on PAPI-based additive modified poly(ether urethane ureas)[J].Journal of Biomedical Materials Research,1993,27(4):499-510.
[8]李汉平,姜卫龙,樊宝珠,等.水性聚氨酯复鞣剂的研究进展及发展趋势[J].中国皮革,2016,45(6):40-42.
[9]Li C T,Qiang T T,Li X N,et al.Preparation and application of collagen-based waterborne polyurethane retanning agent[J].Journal of the Society of Leather Technologists&Chemists,2017,101(3):149-154.
[10]银召霞,沈一丁,李刚辉,等.咪唑封端水性聚氨酯复鞣剂的应用及机理研究[J].中国皮革,2009,38(23):3-6.
[11]马春彦,金勇,曹志峰.聚丙烯酸-聚氨酯-丁烯醛共聚物的复鞣应用研究[J].中国皮革,2013,42(13):18-21.
[12]马春彦,金勇,曹志峰.丙烯酸-聚氨酯-巴豆醛共聚物鞣制机理研究[J].中国皮革,2011,40(23):21-27.
[13]Homola A,James R O.Preparation and characterization of amphoteric polystyrene latices[J].Journal of Colloid&Interface Science,1977,59(1):123-134.
[14]Harding I H,Healy T W.Purification of amphoteric polystyrene latex colloids[J].Journal of Colloid&Interface Science,1982,89(1):185-201.
[15]Kawaguchi H,Hoshino H,Ohtsuka Y.Titrimetric characterization of amphoteric latex[J].Colloids&Surfaces,1983,6(3):271-281.
[16]QB/T 2711-2005,皮革物理和机械试验抗张强度的测定[S].
[17]QB/T 2711-2005,皮革物理和机械试验撕裂强度的测定[S].
[18]罗晓民,丁绍兰,周庆芳.皮革理化分析[M].北京:中国轻工业出版社,2013.
[19]石碧,李靖,廖学品,等.一种无盐不浸酸两性聚合物无铬鞣剂[P].中国专利:CN 103146850A,2014-06-04.
[20]银德海,芮铁英.染色助剂在皮革染色中的应用研究[J].皮革与化工,2010,27(4):1-6.
[21]孙丹红,黄育珍,苟秉琼,等.丙烯酸树脂复鞣剂在革内渗透情况的研究[J].中国皮革,2002,31(7):31-34.
[22]强涛涛,韩咪咪.几种新型复鞣剂的应用性能研究[J].陕西科技大学学报,2017,35(4):6-10.
[23]郭灼能,强西怀,许伟,等.基于FTE改性的两性加脂剂的制备及应用[J].中国皮革,2018,47(5):6-13.
[2]Sivakumar V,Anusha P,Narayan R,et al.Untrasound-assisted process intensification in leather making:Diffusion rate enhancement in retanning process[J].Journal of the American Leather Chemistsassociation,2013,108(7):277-287.
[3]Chao W U,Zeng Y H,Liao X P,et al.Effect of retanning agents on dry heat resistance of leathers[J].Journal of the American Leather Chemists Association,2013,108(8):294-299.
[4]吕斌,贾潞,马建中,等.增深效应复鞣剂的研究进展[J].中国皮革,2014,43(21):45-47.
[5]Qiang T T,Chen L,Zhang Q,et al.A sustainable and cleaner speedy tanning system based on condensed tannins catalyzed by laccase[J].Journal of Cleaner Production,2018,197(1):1 117-1 123.
[6]陈武勇,李国英.鞣制化学[M].北京:中国轻工业出版社,2011.
[7]Brunstedt M R,Ziats N P,Schubert M,et al.Protein adsorption and endothelial cell attachment and proliferation on PAPI-based additive modified poly(ether urethane ureas)[J].Journal of Biomedical Materials Research,1993,27(4):499-510.
[8]李汉平,姜卫龙,樊宝珠,等.水性聚氨酯复鞣剂的研究进展及发展趋势[J].中国皮革,2016,45(6):40-42.
[9]Li C T,Qiang T T,Li X N,et al.Preparation and application of collagen-based waterborne polyurethane retanning agent[J].Journal of the Society of Leather Technologists&Chemists,2017,101(3):149-154.
[10]银召霞,沈一丁,李刚辉,等.咪唑封端水性聚氨酯复鞣剂的应用及机理研究[J].中国皮革,2009,38(23):3-6.
[11]马春彦,金勇,曹志峰.聚丙烯酸-聚氨酯-丁烯醛共聚物的复鞣应用研究[J].中国皮革,2013,42(13):18-21.
[12]马春彦,金勇,曹志峰.丙烯酸-聚氨酯-巴豆醛共聚物鞣制机理研究[J].中国皮革,2011,40(23):21-27.
[13]Homola A,James R O.Preparation and characterization of amphoteric polystyrene latices[J].Journal of Colloid&Interface Science,1977,59(1):123-134.
[14]Harding I H,Healy T W.Purification of amphoteric polystyrene latex colloids[J].Journal of Colloid&Interface Science,1982,89(1):185-201.
[15]Kawaguchi H,Hoshino H,Ohtsuka Y.Titrimetric characterization of amphoteric latex[J].Colloids&Surfaces,1983,6(3):271-281.
[16]QB/T 2711-2005,皮革物理和机械试验抗张强度的测定[S].
[17]QB/T 2711-2005,皮革物理和机械试验撕裂强度的测定[S].
[18]罗晓民,丁绍兰,周庆芳.皮革理化分析[M].北京:中国轻工业出版社,2013.
[19]石碧,李靖,廖学品,等.一种无盐不浸酸两性聚合物无铬鞣剂[P].中国专利:CN 103146850A,2014-06-04.
[20]银德海,芮铁英.染色助剂在皮革染色中的应用研究[J].皮革与化工,2010,27(4):1-6.
[21]孙丹红,黄育珍,苟秉琼,等.丙烯酸树脂复鞣剂在革内渗透情况的研究[J].中国皮革,2002,31(7):31-34.
[22]强涛涛,韩咪咪.几种新型复鞣剂的应用性能研究[J].陕西科技大学学报,2017,35(4):6-10.
[23]郭灼能,强西怀,许伟,等.基于FTE改性的两性加脂剂的制备及应用[J].中国皮革,2018,47(5):6-13.