高分子量受阻胺光稳定剂的合成及其在PBS中的应用
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摘要
通过可逆加成-断裂链转移聚合合成了一系列高分子量且窄分布的受阻胺光稳定剂,研究了其在生物可降解材料聚丁二酸丁二醇酯(PBS)中的应用。通过熔融共混的方法将不同分子量的光稳定剂添加进PBS中,进行人工加速老化实验,并通过傅里叶全反射红外光谱、分子量、力学性能等表征材料的老化程度和老化机理,并以抽提实验探究光稳定剂在PBS中的迁移。结果表明,相比于低分子量的光稳定剂,高分子量的受阻胺光稳定剂能够对PBS材料起到很好的保护效果,明显延长了PBS的使用寿命。
A series of controlled molecular weight and narrow distribution hindered amine light stabilizer( HALS) was synthesized by reversible addition-fragmentation chain transfer( RAFT) polymerization. And its application in the biodegradable material poly( butylene succinate)( PBS) was studied. The different molecular weight of light stabilizers were added into PBS by the method of melt blending and conducted artificial accelerated aging experiments. The aging degree and mechanism of PBS were characterized by attenuated total reflectance fourier transform infrared spectroscopy( ATR-FTIR), molecular weight and mechanics properties test. An extraction experiment was also carried out to study the migration of light stabilizers in PBS. The results show that comparing with the stabilizer with low molecular weight, the hindered amine light stabilizer with high molecular weight could protect the PBS material to a better extent and extend the working life.
A series of controlled molecular weight and narrow distribution hindered amine light stabilizer( HALS) was synthesized by reversible addition-fragmentation chain transfer( RAFT) polymerization. And its application in the biodegradable material poly( butylene succinate)( PBS) was studied. The different molecular weight of light stabilizers were added into PBS by the method of melt blending and conducted artificial accelerated aging experiments. The aging degree and mechanism of PBS were characterized by attenuated total reflectance fourier transform infrared spectroscopy( ATR-FTIR), molecular weight and mechanics properties test. An extraction experiment was also carried out to study the migration of light stabilizers in PBS. The results show that comparing with the stabilizer with low molecular weight, the hindered amine light stabilizer with high molecular weight could protect the PBS material to a better extent and extend the working life.
引文
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[2]FUKUSHIMA K,KIMURA Y.Stereocomplexed polylactides(Neo-PLA)as high-performance bio-based polymers:their formation,properties,and application[J].Polym Int,2010,55(6):626-642.
[3]SCHROETER M,WILDEMANN B,LENDLEIN A.Biodegradable Polymeric Materials[M].Regenerative Med Protocol Patient.2016:65-96.
[4]CHEN G Q.A microbial polyhydroxyalkanoates(PHA)based bio-and materials industry[J].Chem Soc Rev,2009,38(8):2434-2446.
[5]SHAH A A,HASAN F,HAMEED A,et al.Biological degradation of plastics:A comprehensive review.[J].Biotechnol Adv,2008,26(3):246-265.
[6]XU J,GUO B H.Poly(butylene succinate)and its copolymers:research,development and industrialization[J].Biotechnol J,2010,5(11):1149-1163.
[7]TACHIBANA Y,MASUDA T,FUNABASHI M,et al.Chemical synthesis of fully biomass-based poly(butylene succinate)from inedible-biomass-based furfural and evaluation of its biomass carbon ratio[J].Biomacromol,2010,11(10):2760-2765.
[8]ZENG J B,LIU C,LIU F Y,et al.Miscibility and crystallization behaviors of poly(butylene succinate)and poly(llactic acid)segments in their multiblock copoly(ester urethane)[J].Ind Eng Chem Res,2010,49(20):9870-9876.
[9]GARDETTE M,THERIAS S,GARDETTE J L,et al.Photooxidation of polylactide/calcium sulphate composites[J].Polym Degrad Stab,2011,96(4):616-623.
[10]WILEN C E,AUER M,JUHA STRANDEN A,et al.Synthesis of novel hindered amine light stabilizers(HALS)and their copolymerization with ethylene or propylene over both soluble and supported metallocene catalyst systems[J].Macromol,2000,33(33):5011-5026.
[11]HUANG Z Y,ZENG M Q,LIU L,et al.Synthesis and characterization of HALS/UV-absorbers bifunctionalized core-shell elastomer and its application in polyoxymethylene[J].J Polym Res,2014,21(11):1-11.
[12]LIU C,HU W,SANG W,et al.Preparation of controlled molecular weight and narrow distribution HALS and its application[J].J Polym Res,2017,24(4):63.
[13]CARROCCIO S,PAOLA RIZZARELLI A,PUGLISI C,et al.MALDI investigation of photooxidation in aliphatic polyesters:Poly(butylene succinate)[J].Macromol,2004,37(17):6576-6586.
[14]KIJCHAVENGKUL T,AURAS R,RUBINO M,et al.Biodegradation and hydrolysis rate of aliphatic aromatic polyester[J].Polym Degrad Stab,2010,95(12):2641-2647.
[15]YANG R,YU J,LIU Y,et al.Effects of inorganic fillers on the natural photo-oxidation of high-density polyethylene[J].Polym Degrad Stab,2005,88(2):333-340.