Decoupling the Roles of Chain Length, Entanglements, and Intermolecular Interactions on the Melt Memory of Semicrystalline Polar Homopolymers [0.03%]
链长、缠结和分子间相互作用对半结晶极性均聚物熔体记忆的解耦研究
M Ali Aboudzadeh,Leire Sangroniz,Olivier Coulembier et al.
M Ali Aboudzadeh et al.
In polymer crystals, chains are closely packed within unit cells. If they are heated above their melting point, they require a specific temperature and time to revert their ordered conformations to isotropic random coils in the melt. When t...
Characterization of Sequence Distributions in Random and Semi-Random Copolymers [0.03%]
随机共聚物和半随机共聚物中序列分布的表征
Michael Cole,Jordan Fitch,Tara Y Meyer
Michael Cole
We report a strategy for analyzing and distinguishing the sequence distributions of random and semirandom poly-(lactic-co-glycolic acid) (PLGA) analogs using selective digestion at cleavable olefin-containing monomer units. Semirandom copol...
Function Meets Circularity: Metal-Ionomer Cross-Links Toughen and Recycle CO2‑Derived Polymers [0.03%]
功能与闭环的结合：金属离子交联剂增强和回收二氧化碳聚合物
Kam C Poon,Thomas M McGuire,Chang Gao et al.
Kam C Poon et al.
Designing polymers that combine performance with sustainability remains a critical challenge. Here, we report high-performance elastomers derived from CO2 and biobased monomers that integrate both mechanical toughness and closed-loop chemic...
Chemical Fingerprinting of Synthetic Polymers via Direct Insertion Probe Mass Spectrometry [0.03%]
基于直接插入探针质谱的合成高分子化学指纹研究
Ville H Nissinen,Nea Heilala,Krista Grönlund et al.
Ville H Nissinen et al.
We report on the chemical fingerprinting of synthetic polymers using direct insertion probe mass spectrometry (DIP-MS), an analytical approach requiring only minimal sample preparation. A total of 38 different polymers were analyzed using t...
Influence of Charge Block Length on Conformation and Cluster Formation of Atactic Peptide Polyampholytes [0.03%]
侧链电荷长度对无规肽聚电解质构象及聚集的影响
Winnie H Shi,Amanda B Marciel
Winnie H Shi
We investigate the effect of the charge block length on the chain conformation and phase behavior of atactic peptide polyampholytes (PAs) with equal numbers of cationic and anionic ionizable monomers. Atactic peptide PAs were produced by us...
Understanding Solvent-Induced Glass Transition in Polymer Thin Films Using Absorption-Desorption Isotherms [0.03%]
基于吸附解吸等温线理解聚合物薄层中溶剂引起的玻璃化转变
Nayanathara Hendeniya,Sharif Tasnim Mahmud,Shaghayegh Abtahi et al.
Nayanathara Hendeniya et al.
The fundamental thermodynamic and mechanical underpinnings of polymer thin films exposed to solvent vapor are critical for the development of advanced nanolithography and high-performance coatings. This work investigates the solvent-polymer...
Unexpected Ductility Enhancement in Crystalline-Crystalline Polyolefin Diblock Copolymers without Introducing Soft Segments [0.03%]
不含软段的晶态-晶态聚烯烃嵌段共聚物中出乎意料的塑性增加现象
Rocco Di Girolamo,Miriam Scoti,Chiara Santillo et al.
Rocco Di Girolamo et al.
Combining polyethylene and polypropylene (isotactic or syndiotactic) crystalline blocks within a single macromolecule offers a powerful framework to elucidate how the molecular architecture governs deformation and phase transformations duri...
Examining the Impact of Side-Chain Chirality on Conformation of a Helical Poly(3‑(S‑1-ethylhexyl)esterfuran) [0.03%]
侧链旋光异构对螺旋聚-3-(R/S-1-乙基己基)呋喃酯构象的影响研究
Dhruv Sharma,Manami Kawakami,Megan Rice et al.
Dhruv Sharma et al.
A key challenge with synthetic chiral helical polymers is the precise determination of their structure, particularly their pitch and handedness. In past work, we demonstrated that poly-(3-hexylesterfuran) (P3HEF) adopts a compact helical co...
Dual-Pathway Strategy for Click-Type Functionalization and Programmable Polymer Deconstruction [0.03%]
点击型功能化和可编程聚合物降解的双途径策略
Ivan O Levkovsky,Lucca Trachsel,Hironobu Murata et al.
Ivan O Levkovsky et al.
Developing polymeric materials that combine precise, modular functionalization with programmed backbone degradability remains an outstanding challenge in macromolecular engineering. Herein, we present a molecular design strategy that integr...
Different Crystalline Populations for Biopolyesters within Graphene-Based Nanopapers [0.03%]
基于石墨烯的纳米纸中生物聚酯的不同晶体群落
Hui Zhao,Ricardo A Pérez-Camargo,Yongzheng Li et al.
Hui Zhao et al.
The control and design of the semicrystalline structure of polymer binders within nanopapers based on graphene-related materials (GRM) may have a significant impact on the nanopapers' physical properties, including thermomechanical resistan...