Polymer science. Series A, Chemistry, physics最新文献

Polymer Functionalized Graphene 聚合物功能化石墨烯

Polymer science. Series A, Chemistry, physics Pub Date : 2021-01-01 DOI: 10.1039/9781788019675

引用次数: 1

CHAPTER 13. New Approaches Towards the Design of Tough Amphiphilic Polymeric Co-networks 第13章。刚性两亲共聚物网络设计的新方法

Polymer science. Series A, Chemistry, physics Pub Date : 2020-04-23 DOI: 10.1039/9781788015769-00277

S. Tan, N. Chan, Joe Collins, Q. Fu, G. Qiao

{"title":"CHAPTER 13. New Approaches Towards the Design of Tough Amphiphilic Polymeric Co-networks","authors":"S. Tan, N. Chan, Joe Collins, Q. Fu, G. Qiao","doi":"10.1039/9781788015769-00277","DOIUrl":"https://doi.org/10.1039/9781788015769-00277","url":null,"abstract":"Since the 1960s, polymer network hydrogels have been used for various applications. However, these applications have been restricted to non-load-bearing ones, due to the inherent mechanical weakness of common hydrogels. This weakness is attributed to the irregular crosslinking density, the high proportion of singly-attached (dangling and, therefore, elastically inactive) chains and the broadly varying distance between crosslinking points. In recent years, ground-breaking studies focusing on the development of novel approaches to fabricate near-ideal polymer network hydrogels with excellent mechanical properties have been developed. In this chapter, these new approaches will be outlined, with specific interest in amphiphilic polymer co-networks (APCNs), i.e. networks containing both hydrophilic and hydrophobic domains. The ability to generate these near-ideal networks, which often also possess ‘smart’ stimuli-responsive properties, would allow APCNs to be used in a wide range of advanced applications, including soft robotics, biomaterials and materials science. These new synthetic methodologies will be described in this chapter and will be separated into either fundamentally altering the network architecture and/or by employing facile and orthogonal coupling chemistries.","PeriodicalId":20304,"journal":{"name":"Polymer science. Series A, Chemistry, physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87141421","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Redox Polymers for Energy and Nanomedicine 用于能源和纳米医学的氧化还原聚合物

Polymer science. Series A, Chemistry, physics Pub Date : 2020-01-01 DOI: 10.1039/9781788019743

引用次数: 9

Contents. Contents 内容。内容

Polymer science. Series A, Chemistry, physics Pub Date : 2020-01-01 DOI: 10.1039/9781788019743-fp007

引用次数: 0

CHAPTER 8. Chemosynthesis of Poly(ε-Lysine) via Ring-opening Polymerization of Cyclic Lysine 第八章。环赖氨酸开环聚合法制备聚(ε-赖氨酸)

Polymer science. Series A, Chemistry, physics Pub Date : 2019-09-09 DOI: 10.1039/9781788016469-00243

Jia-Fang Lian, Jinlong Chen, Y. Tao, Xianhong Wang

{"title":"CHAPTER 8. Chemosynthesis of Poly(ε-Lysine) via Ring-opening Polymerization of Cyclic Lysine","authors":"Jia-Fang Lian, Jinlong Chen, Y. Tao, Xianhong Wang","doi":"10.1039/9781788016469-00243","DOIUrl":"https://doi.org/10.1039/9781788016469-00243","url":null,"abstract":"Poly(e-lysine) is an uncommon cationic homopolymer and has many potential high-value applications. Due to its significant antimicrobial activity and nontoxicity to humans, poly(e-lysine) is now industrially produced by a fermentation process as an additive, e.g. for food and cosmetics. However, the biosynthetic route can only make polymers with a molecular weight of about 3 kDa. Here, we propose the use of bases for the ring-opening polymerization (ROP) of cyclic lysine (e-lactam) monomer towards poly(e-lysine). Among the evaluated bases, NaH and t-BuP2 were found to be the most effective for the polymerization of e-lactam monomer, affording poly(e-lysine) bearing pendant 2,5-dimethylpyrrole protecting groups with a number average molecular weight of up to 45 kg mol−1. Moreover, poly(e-lysine) was prepared by the removal of the 2,5-dimethylpyrrole protecting groups. Finally, a pilot-scale study was demonstrated to obtain poly(e-lysine) with Mn up to 10 kg mol−1. The new development in the ring-opening polymerization route and Mn improvement for poly(e-lysine) have created new chances for industry. In particular, the low cost of lysine may help to produce low-cost poly(e-lysine), providing a new solution that can overcome the cost problem, which has puzzled the poly(e-lysine) industry since its birth.","PeriodicalId":20304,"journal":{"name":"Polymer science. Series A, Chemistry, physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77260778","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

CHAPTER 6. Bimetallic Complex Mediated Meso-epoxide Desymmetrization Copolymerization 第六章。双金属配合物介导中环氧化物脱对称共聚

Polymer science. Series A, Chemistry, physics Pub Date : 2019-09-09 DOI: 10.1039/9781788016469-00167

Xiao‐Bing Lu

引用次数: 0

CHAPTER 2. Thiol Chemistry for Precision Polymer Synthesis 第二章。精密聚合物合成中的硫醇化学

Polymer science. Series A, Chemistry, physics Pub Date : 2019-09-09 DOI: 10.1039/9781788016469-00032

Zhengbiao Zhang, Baolei Liu, Zhihao Huang, Yu-fang Zhong, Qiunan Shi, Xiu-lin Zhu

引用次数: 1

CHAPTER 1. New Polymers From SuFEx Click Chemistry: Syntheses and Perspectives 第1章。来自SuFEx的新聚合物点击化学:合成和观点

Polymer science. Series A, Chemistry, physics Pub Date : 2019-09-09 DOI: 10.1039/9781788016469-00001

Long Xu, Peng Wu, Jiajia Dong

引用次数: 7

CHAPTER 9. Fused (Hetero)Cyclic Polymers Synthesized by Alkyne-Based Polymerizations 第9章。炔基聚合合成的熔融(杂)环聚合物

Polymer science. Series A, Chemistry, physics Pub Date : 2019-09-09 DOI: 10.1039/9781788016469-00264

T. Han, J. Lam, B. Tang

{"title":"CHAPTER 9. Fused (Hetero)Cyclic Polymers Synthesized by Alkyne-Based Polymerizations","authors":"T. Han, J. Lam, B. Tang","doi":"10.1039/9781788016469-00264","DOIUrl":"https://doi.org/10.1039/9781788016469-00264","url":null,"abstract":"Fused (hetero)cyclic polymers are an important group of functional materials with unique electrochemical and photophysical properties. They are in great demand in high-tech applications such as organic electronics and advanced optical devices. Alkyne-based polymerizations have been found to be a powerful tool for the synthesis of fused (hetero)cyclic polymers. The fused (hetero)cyclic units can form in situ in the polymer backbones during the polymerizations. In this chapter, the progress in the synthesis of fused (hetero)cyclic polymers by alkyne-based polymerizations will be summarized, including the homopolymerizations of acetylenic monomers, stoichiometric polyannulations of internal diynes and aromatics, non-stoichiometric polyannulations of internal diynes and monofunctional aromatics, and multicomponent acetylenic polymerizations. Meanwhile, the properties and functionalities of the produced fused (hetero)cyclic polymers, such as thermal and morphological stability, light refraction and chromatic dispersion, photoluminescent properties, fluorescent chemosensor, external stimuli-responsive materials, etc., will also be discussed.","PeriodicalId":20304,"journal":{"name":"Polymer science. Series A, Chemistry, physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76069207","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

CHAPTER 5. Olefin (Co)polymerizations Enabled by Catalyst Design Based on Sidearm Strategy 第五章。基于Sidearm策略的催化剂设计实现烯烃(Co)聚合

Polymer science. Series A, Chemistry, physics Pub Date : 2019-09-09 DOI: 10.1039/9781788016469-00129

Jiao-Long Zhou, Xiao-Yan Wang, Xiu-Li Sun, Yong Tang

{"title":"CHAPTER 5. Olefin (Co)polymerizations Enabled by Catalyst Design Based on Sidearm Strategy","authors":"Jiao-Long Zhou, Xiao-Yan Wang, Xiu-Li Sun, Yong Tang","doi":"10.1039/9781788016469-00129","DOIUrl":"https://doi.org/10.1039/9781788016469-00129","url":null,"abstract":"A series of group IV metal catalysts was designed by using the “Sidearm Strategy”. The sidearm group is envisioned to act as a controller of the shape and/or electronic properties of the catalytic site and so to tune the behaviours of olefin (co)polymerization. As expected, the coordination pattern of the newly-designed ligands with titanium tetrachloride leads to complexes of monoligand trichloro titanium, and this result makes the steric space of the active site for polymerization readily tunable via variation of the sidearm. In the presence of MMAO, these complexes show excellent activity to copolymerize ethylene and comonomer. 1-Alkenes, cycloolefins, ω-alkenol, ω-alkenoic acid, and ω-alkenoic ester could be incorporated into the PE backbone efficiently. In addition, both SHOP type nickel complexes and bisoxazolines were modified by the sidearm strategy. Based on this simple strategy, the activity of the resulting nickel complexes increased obviously and the newly-designed SaBOX played the key role in a highly syndiospecific (>90% rr) and controlled ATRP of methyl methacrylate (MMA), allyl methacrylate (AMA) and vinyl methacrylate (VMA) under mild polymerization conditions.","PeriodicalId":20304,"journal":{"name":"Polymer science. Series A, Chemistry, physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73435182","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0