Polymer Chemistry最新文献_第5页

Towards the Synthesis of Polythiazolines: A Post-polymerization Approach

IF 4.6 2区化学

Polymer Chemistry Pub Date : 2024-12-05 DOI: 10.1039/d4py00930d

Aikaterini Mathianaki, Aysha Demeler, Adrian Dömling, Federico Ferrrari, Frieda Clara M. Scheelje, Hilke Bahmann, Guillaume Delaittre

引用次数: 0

Structure-Property Relationships to Direct the Dynamic Properties of Acylsemicarbazide-Based Materials

IF 4.6 2区化学

Polymer Chemistry Pub Date : 2024-12-04 DOI: 10.1039/d4py01296h

Stefan Maessen, Siebe Lekanne Deprez, Bart van den Bersselaar, Pascal Vermeeren, Johan P. A. Heuts, Martin Lutz, Célia Fonseca Guerra, Anja Palmans

{"title":"Structure-Property Relationships to Direct the Dynamic Properties of Acylsemicarbazide-Based Materials","authors":"Stefan Maessen, Siebe Lekanne Deprez, Bart van den Bersselaar, Pascal Vermeeren, Johan P. A. Heuts, Martin Lutz, Célia Fonseca Guerra, Anja Palmans","doi":"10.1039/d4py01296h","DOIUrl":"https://doi.org/10.1039/d4py01296h","url":null,"abstract":"Secondary interactions, such as hydrogen bonding or phase separation, can enhance the stability of dynamic covalent materials without compromising on desired dynamic properties. Here, we investigate the combination of multiple secondary interactions in dynamic covalent materials based on acylsemicarbazides (ASCs), with the aim of achieving tunable material properties. The effects of different ASC substituents on the dynamic covalent and hydrogen bonding capabilities were investigated in a small molecule study using a combined experimental and theoretical approach and revealed the presence of cooperative hydrogen-bonding interactions in 2 directions in one of the derivatives. The different motifs were subsequently implemented in polymeric materials. Combining ASC motifs capable of strong multiple hydrogen bonding with a polydimethylsiloxane backbone introduces structure-dependent, ordered nanophase separation in polymeric materials. The thermo-mechanical properties of these materials reveal a strong dependance on the hydrogen-bonding structure and exact nature of the ASC bond. The dynamics in bulk show that bond exchange depends on the dissociation rate obtained from ASC model compounds, as well as the strength of the secondary interactions in these materials. Differences in hydrogen-bonding structures of the ASC groups also cause differences in creep resistance of the materials. Interestingly, the materials with strong, ordered and cooperative hydrogen-bonded clusters show the highest creep resistance. Our results demonstrate that tuning both the dissociation rate and the secondary interactions by molecular design in dynamic covalent materials is important for controlling their thermal stability and creep resistance","PeriodicalId":100,"journal":{"name":"Polymer Chemistry","volume":"37 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2024-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142763705","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

High Second-Order Nonlinear Optical Effect Achieved by Gradually Decreased Rotational Energy Barriers

IF 4.6 2区化学

Polymer Chemistry Pub Date : 2024-12-04 DOI: 10.1039/d4py01238k

Panpan Qiao, Wentao Yuan, Qianqian Li, Zhen Li

引用次数: 0

Tuning 'Ligandless' Direct Arylation Polymerization toward Less-Branching EDOT Polymers

IF 4.6 2区化学

Polymer Chemistry Pub Date : 2024-12-04 DOI: 10.1039/d4py01212g

Xilin Pei, Quan Yang, Yanlu Sun, Wu Wei, Jianyong Yu, Yong He

引用次数: 0

Fifteen years of Polymer Chemistry

IF 4.1 2区化学

Polymer Chemistry Pub Date : 2024-12-04 DOI: 10.1039/D4PY90143F

Christine K. Luscombe and Maria E. Southall

引用次数: 0

Recent progress in nonstoichiometric step-growth polymerization

IF 4.1 2区化学

Polymer Chemistry Pub Date : 2024-12-03 DOI: 10.1039/D4PY01091D

Kenta Yokawa and Tomoya Higashihara

引用次数: 0

3D Printable Biopolymers as Pelvic Floor Scaffolds

IF 4.6 2区化学

Polymer Chemistry Pub Date : 2024-12-03 DOI: 10.1039/d4py01103a

Lindsay Chambers, Yuxiang Zhu, Churan Yu, Natalie Crutchfield, Jixin Hou, Liang Liang, Xianqiao Wang, Yang Liu, Martin Taylor Sobczak, Taylor Theobald, Xiao Sun, Carly R. Stoll, Tiffany Pulido, Johnny Yi, Jeffrey L. Cornella, Heather McIlwee, Hitesh Handa, Elizabeth J. Brisbois, Jessica Lancaster, Kenan Song

{"title":"3D Printable Biopolymers as Pelvic Floor Scaffolds","authors":"Lindsay Chambers, Yuxiang Zhu, Churan Yu, Natalie Crutchfield, Jixin Hou, Liang Liang, Xianqiao Wang, Yang Liu, Martin Taylor Sobczak, Taylor Theobald, Xiao Sun, Carly R. Stoll, Tiffany Pulido, Johnny Yi, Jeffrey L. Cornella, Heather McIlwee, Hitesh Handa, Elizabeth J. Brisbois, Jessica Lancaster, Kenan Song","doi":"10.1039/d4py01103a","DOIUrl":"https://doi.org/10.1039/d4py01103a","url":null,"abstract":"Pelvic floor disorders (PFD) are common among women, causing dysfunction, incontinence, and discomfort. Surgeries to repair the descended tissues can result in complications due to implant material design, particularly from the hardness and mechanical mismatch to native tissue. A more flexible implant could reduce complications, such as exposure and tissue erosion. This work seeks to characterize a 3D-printed double-crosslinked hydrogel tissue scaffold consisting primarily of polyvinyl alcohol (PVA). It also compares its static/dynamic/thermal/biological properties to existing commercial products used in PFD therapies, showing our pelvic mesh’s biodegradability/robustness advantages over the commercial ones. Tensile tests revealed that the hydrogel scaffold was more compliant than the commercial alternatives. Dynamic mechanical testing has shown that these polymers are durable enough to support organs with specific weight above the pelvic floor. In vivo mouse studies demonstrated low inflammation and good biocompatibility over a 28-day period. The development of this scaffold offers a promising alternative for more effective, long-lasting PFD treatments with fewer post-operative complications, advancing personalized medicine.","PeriodicalId":100,"journal":{"name":"Polymer Chemistry","volume":"261 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2024-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142759904","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Synthesis of periodic polyolefins based on anionic alternating copolymerization

IF 4.6 2区化学

Polymer Chemistry Pub Date : 2024-12-02 DOI: 10.1039/d4py00908h

Hong Yan, Hongyuan Bai, Xuefei Wang, Haitao Leng, Siwei Chen, Li Han, Hongwei Ma

{"title":"Synthesis of periodic polyolefins based on anionic alternating copolymerization","authors":"Hong Yan, Hongyuan Bai, Xuefei Wang, Haitao Leng, Siwei Chen, Li Han, Hongwei Ma","doi":"10.1039/d4py00908h","DOIUrl":"https://doi.org/10.1039/d4py00908h","url":null,"abstract":"To avoid sequence bias in the chain growth process of multicomponent periodic polymers, we reported an indirect method for the synthesis of strictly periodic polymers with nonpolar monomers. With 1,1-diphenylethylene (DPE) as the comonomer, the precise sequence was achieved through living anionic polymerization (LAP) and hydrogenation. Four dienes (isoprene (Ip), 2,3-dimethylbuta-1,3-diene (DMBD), 2,3-diphenylbutadiene-1,3-diene (DPB), and 1-phenyl-1,3-butadiene (1-PB)) and an olefin with cyclic tension 1-cyclobutylvinylbenzene (CBVB) were copolymerized with DPE to prepare the alternating precursors. The periodic sequences of DPE-styrene-propylene (pd-DSP), DPE-propylene-propylene (pd-DPP), DPE-ethylene-styrene (pd-DES), DPE-styrene-styrene (pd-DSS) and DPE-ethylene-styrene-styrene (pd-DESS) were successfully synthesized with hydrogeneration of these alternating precursors, and the nonpolar olefin units were successfully introduced into the periodic polymer. The results showed that the modification of the backbone carbon framework structure caused a consistent change in the thermal properties of the polymers. Moreover, the steric hindrance and arrangement density of the side chain substituents could significantly affect the performance of the periodic copolymers. This study provides a feasible method for the synthesis of non-polar periodic copolymers with precise periodic arrangements.","PeriodicalId":100,"journal":{"name":"Polymer Chemistry","volume":"261 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2024-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142758374","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Converting high modulus water-based elastomeric core–shell nanoparticle films from viscoelastic to predominantly elastic using di-epoxide crosslinking

IF 4.6 2区化学

Polymer Chemistry Pub Date : 2024-11-29 DOI: 10.1039/d4py01073f

Mollie Osborne-Richards, David Ring, Xuelian Wang, Sarah Wall, Steve Edmondson, Brian R. Saunders

{"title":"Converting high modulus water-based elastomeric core–shell nanoparticle films from viscoelastic to predominantly elastic using di-epoxide crosslinking","authors":"Mollie Osborne-Richards, David Ring, Xuelian Wang, Sarah Wall, Steve Edmondson, Brian R. Saunders","doi":"10.1039/d4py01073f","DOIUrl":"https://doi.org/10.1039/d4py01073f","url":null,"abstract":"Most elastomers are formed using solvent-based processes which result in an environmental burden. Consequently, elastomers formed using water-based nanoparticle dispersions are highly desirable. Here, we investigate elastomer-like films based on water-dispersible carboxylic acid-containing core–shell (CS) nanoparticles. The nanoparticles contain a poly(n-butylacrylate) (PBA) core and a poly(BA-co-acrylonitrile-co-methacrylic acid) shell. We react the –COOH groups of the shell with a di-epoxide (1,4-butanediol diglycidyl ether, BDDE) which replaces dissipative hydrogen bonds in the nanoparticle elastomer films with covalent bonds. The reaction with BDDE enables the transformation of a stretchable dissipative film (shear modulus of 9.0 MPa with 20% strain energy recovery) into a predominantly elastic film (shear modulus of 0.20 MPa with almost 100% energy recovery). Our optimum system, CS-0.5, has a shear modulus of 0.40 MPa, an impressive strain-at-break of greater than 300% and an energy recovery of 80%. The strain-at-break is increased to more than 450% using a monofunctional epoxide. We further explore the inter- and intra-nanoparticle nature of the di-epoxide reaction and how the mechanical properties can be tuned by varying the method of film formation. The facile approach introduced here enables the tuning of the mechanical properties of elastomeric core–shell nanoparticle films from dissipative to predominantly elastic on demand.","PeriodicalId":100,"journal":{"name":"Polymer Chemistry","volume":"70 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2024-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142742650","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Tailoring reactive handles on the surface of nanoparticles for covalent conjugation of biomolecules 在纳米粒子表面定制用于生物大分子共价键合的反应手柄

IF 4.6 2区化学

Polymer Chemistry Pub Date : 2024-11-27 DOI: 10.1039/d4py01119h

Francesca Mazzotta, Sharafudheen Pottanam Chali, Ingo Lieberwirth, Calum T. J. Ferguson, Katharina Landfester

{"title":"Tailoring reactive handles on the surface of nanoparticles for covalent conjugation of biomolecules","authors":"Francesca Mazzotta, Sharafudheen Pottanam Chali, Ingo Lieberwirth, Calum T. J. Ferguson, Katharina Landfester","doi":"10.1039/d4py01119h","DOIUrl":"https://doi.org/10.1039/d4py01119h","url":null,"abstract":"Surface modification of nanoparticles involves numerous types of active molecules such as DNA, antibodies, enzymes, or carbohydrates. These modifications usually require reactive handles like amines, carboxylic acids, azides, etc. on the nanoparticles. In this work, utilizing poly-benzyl methacrylate based nanoparticles as a model nanoparticle system, the number of functional groups was tuned with functional comonomers, amino ethyl methacrylate for the amino groups or methyl methacrylate for the carboxylic groups. Herein a systematic study is presented where the functional groups in the nanoparticles are differentiated between total, visible and accessible functional groups. The concentration of each type of functional group is compared using various methods. Polymers synthesized using free radical polymerization were analyzed using 1H-NMR spectroscopy to obtain the total number of functional groups. Via a miniemulsion–solvent evaporation technique, these polymers were used to synthesize the nanoparticles. Zeta potential, pH value and particle charge detection measurements were used to determine the number of visible functional groups. The number of accessible functional groups was quantified by conjugating small dyes and fluorescence measurements were directly executed on the system under investigation, hence eliminating errors associated with indirect measurements and detecting very low concentrations (e.g. 80 nM). Lastly, human serum albumin was conjugated to investigate the effect of a bulky molecule on the accessibility of these reactive handles.","PeriodicalId":100,"journal":{"name":"Polymer Chemistry","volume":"38 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2024-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142718445","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0