Research progress in performance regulation strategies of polybutylene succinate
Significance While polymer materials bring convenience to people's lives,environmental pollution problems such as non-renewable resource consumption and microplastics caused by the manufacturing and disposal of non-degradable materials have received more attention.Poly(butylene succinate)(PBS)is a potential fully biodegradable aliphatic polyester.However,the long degradation cycle and relatively poor strength and toughness limited the actual processing and application process,and it is difficult to develop industrialization on a large scale.In order to seek new recycled degradable polymer materials as a way to improve and promote the performance optimization and industrialization progress of PBS materials,the performance regulation strategies and applications of PBS polymers were summarized.The latest research results of physical blending modification,molecular structure copolymerization modification and functional block modification of polymers were analyzed.Through the discussions of the influence of the modification control strategy on the chain structure and aggregation structure of the polymer,it is hoped to further promote the research of biodegradable polymer materials and the development of industrialization.Progress Through the analysis of PBS performance control strategy,the compatibility problem of physical blending is the key drawback and problem.In discussing the blending modification and the role of functional blending,chemical copolymerization modification strategy was found an effective approach to solve the problem of phase separation morphology.By sorting out the comonomers,the modified monomer structures were classified and summarized,and the role of flexible,rigid and functional structural monomers in the chain segment and the influence of structural units on the chain structure and aggregation structure of the polymer were analyzed.The influence of the structure and proportion of typical comonomers on the polymer glass transition temperature was analyzed to illustrate the relationship between the structure and the performance of the material.However,the problem of structural regularity destruction and PBS processing window narrowing caused by the chemical copolymerization strategy still needs to be solved.Then,the functional block modification strategy was described,and the performance of block copolymers was regulated by the introduction of molecular chains and chain structure.The block copolymerization modification strategy was described by the block copolymer reaction mechanism and typical chemical structure and preparation route.The regulation of the structure of polyester polyurethane copolymers was summarized.The influences of the introduction of flexible structure,rigid structure and amorphous structure on the polymerization products were discussed.Finally taking lactic acid as an example,the influences of different regulation strategies on polymers were discussed and analyzed.The advantages and disadvantages of physical and chemical modification strategies were analyzed and compared.The differences of different performance regulation strategies were described.The modification scheme with performance requirements as the starting point,product processing methods as the route,and application fields and final products as the goal was proposed.Conclusion and Prospect Through the analysis of the above modification strategy,the modification technology and method of polymer should be selected from the perspective of product demand and application environment and combined with the overall relationship of cost-efficiency-performance to realize the integrated development of product demand-production-application,and provide research and development preparation ideas for PBS-based modified product demand and industrial application.By summarizing the performance control strategies of PBS polymers,it is concluded that PBS can be applied to multiple fields such as intelligent medical treatment and degradable materials,rather than being limited to the development of new materials.It is also expected to achieve new breakthroughs in the substitution and performance of traditional polymer materials with its excellent performance and degradable advantages under the background of the times.
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