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On-demand tuned hazard free elastomeric composites: A green approach

Manoharan, Partheban; Das, Narayan Chandra; Naskar, Kinsuk

Customer publications

On-demand tuned hazard free elastomeric composites: A green approach

Manoharan, Partheban; Das, Narayan Chandra; Naskar, Kinsuk

Rising ecological concerns and depletion of the potentially harmful environmental impacts caused by rubber products, are of prime importance in the industry. Therefore, implementation of sustainable greener materials is required to minimize the detrimental influences. In this research, we investigated the beneficial influence of naturally derived bio-resin toward the effects…
Preparation and Properties of High-performance Polyimide Copolymer Fibers Derived from 5-Amino-2-(2-hydroxy-5-aminobenzene)-benzoxazole

Dai, Xue-Min; Gao, Hong; Zhang, Ran; Du, Zhi-Jun; Shi, Tong-Fei; Ji, Xiang-Ling; Qiu, Xue-Peng; Men, Yong-Feng

Customer publications

Preparation and Properties of High-performance Polyimide Copolymer Fibers Derived from 5-Amino-2-(2-hydroxy-5-aminobenzene)-benzoxazole

Dai, Xue-Min; Gao, Hong; Zhang, Ran; Du, Zhi-Jun; Shi, Tong-Fei; Ji, Xiang-Ling; Qiu, Xue-Peng; Men, Yong-Feng

A series of polyamic acid copolymers (co-PAAs) with para-hydroxyl groups was synthesized using two diamine monomers, namely p-phenylenediamine (p-PDA) and 5-amino-2-(2-hydroxy-5-aminobenzene)-benzoxazole (m-pHBOA), of different molar ratios through copolymerization with 3,3′,4,4′-biphenyltetracarboxylic dianhydride (BPDA) in N,N-dimethyacetamine (DMAc). The co-PAA solutions were used to fabricate…
Functionally Active Membrane Proteins Incorporated in Mesostructured Silica Films

Jahnke, Justin P.; Idso, Matthew N.; Hussain, Sunyia; Junk, Matthias J. N.; Fisher, Julia M.; Phan, David D.; Han, Songi; Chmelka, Bradley F.

Customer publications

Functionally Active Membrane Proteins Incorporated in Mesostructured Silica Films

Jahnke, Justin P.; Idso, Matthew N.; Hussain, Sunyia; Junk, Matthias J. N.; Fisher, Julia M.; Phan, David D.; Han, Songi; Chmelka, Bradley F.

A versatile synthetic protocol is reported that allows high concentrations of functionally active membrane proteins to be incorporated in mesostructured silica materials. Judicious selections of solvent, surfactant, silica precursor species, and synthesis conditions enable membrane proteins to be stabilized in solution and during subsequent coassembly into silica–surfactant composites with nano-…
Influences of Compression on the Mechanical Behavior and Electrochemical Performances of Separators for Lithium Ion Batteries

Yu, Yansong; Xiong, Bijin; Zeng, Fangxinyu; Xu, Ruizhang; Yang, Feng; Kang, Jian; Xiang, Ming; Li, Lu; Sheng, Xingyue; Hao, Zengheng

Customer publications

Influences of Compression on the Mechanical Behavior and Electrochemical Performances of Separators for Lithium Ion Batteries

Yu, Yansong; Xiong, Bijin; Zeng, Fangxinyu; Xu, Ruizhang; Yang, Feng; Kang, Jian; Xiang, Ming; Li, Lu; Sheng, Xingyue; Hao, Zengheng

Compression stress on thickness direction of separators exists in assembling and operation of all lithium ion batteries (LIBs). In this study, influences of compression on microporous morphologies, electrolyte uptake behavior, and electrochemical properties of three types of commercial separators (PP-U, PP-B, and PE-B) for LIBs manufactured via different processes, were…
Factors controlling the structure of syndiotactic polystyrene upon the guest exchange and guest extraction processes

Shaiju, P.; Bhoje Gowd, E.

Customer publications

Factors controlling the structure of syndiotactic polystyrene upon the guest exchange and guest extraction processes

Shaiju, P.; Bhoje Gowd, E.

The role of host preparation method on the structural phase transition of syndiotactic polystyrene (sPS) after the guest exchange process has been thoroughly investigated in our previous study using a series of n-alkanes . In addition to the host preparation method, we have found that guest molecules used for the…
Thermal behavior of poly(VDF-ter-TrFE-ter-CTFE) copolymers: Influence of CTFE termonomer on the crystal-crystal transitions

Bargain, François; Thuau, Damien; Panine, Pierre; Hadziioannou, Georges; Domingues Dos Santos, Fabrice; Tencé-Girault, Sylvie

Customer publications

Thermal behavior of poly(VDF-ter-TrFE-ter-CTFE) copolymers: Influence of CTFE termonomer on the crystal-crystal transitions

Bargain, François; Thuau, Damien; Panine, Pierre; Hadziioannou, Georges; Domingues Dos Santos, Fabrice; Tencé-Girault, Sylvie

Depending on their CTFE content (from 0 to 10 mol %), poly (VDF-ter-TrFE-ter-CTFE), poly(vinylidene fluoride-ter-trifluoroethylene-ter-chlorotrifluoroethylene) copolymers exhibit ferroelectric (FE) or relaxor ferroelectric (RFE) properties at low temperature whereas they all present paraelectric (PE) behavior at high temperature. This thermal evolution of their electro-active properties is…
Bimodal mesoporous hard carbons from stabilized resorcinol-formaldehyde resin and silica template with enhanced adsorption capacity

Fuentes-Quezada, Eduardo; de la Llave, Ezequiel; Halac, Emilia; Jobbágy, Matías; Viva, Federico A.; Bruno, Mariano M.; Corti, Horacio R.

Customer publications

Bimodal mesoporous hard carbons from stabilized resorcinol-formaldehyde resin and silica template with enhanced adsorption capacity

Fuentes-Quezada, Eduardo; de la Llave, Ezequiel; Halac, Emilia; Jobbágy, Matías; Viva, Federico A.; Bruno, Mariano M.; Corti, Horacio R.

Hard carbon powders with hierarchical mesoporous structure from resorcinol-formaldehyde polymer were successfully prepared by use of double pore forming method. Poly-diallyldimethylammonium chloride (pDADMAC) and commercial silica (Sipernat® 50) were used as structuring agent and hard template, respectively. Through the proposed procedure carbon powder with bimodal mesoporous size distribution…
In-situ construction of “octopus”-like nanostructure to achieve high performance epoxy thermosets

Heng, Zhengguang; Zhang, Xueqin; Chen, Yang; Zou, Huawei; Liang, Mei

Customer publications

In-situ construction of “octopus”-like nanostructure to achieve high performance epoxy thermosets

Heng, Zhengguang; Zhang, Xueqin; Chen, Yang; Zou, Huawei; Liang, Mei

Inspired by the octopus, a typical nanostructure consisting of a spherical “body” and worm-like “tentacles with suckers” was constructed through incorporating polydimethylsiloxane-block-poly(ε-caprolactone)-block-polystyrene (BXLS) in epoxy thermosets. The novel nanostructure of BXLS copolymer and its morphology evolution during the epoxy curing process were investigated by transmission electron…
Biomimetic Supertough and Strong Biodegradable Polymeric Materials with Improved Thermal Properties and Excellent UV-Blocking Performance

Zhang, Xiao; Liu, Weifeng; Yang, Dongjie; Qiu, Xueqing

Customer publications

Biomimetic Supertough and Strong Biodegradable Polymeric Materials with Improved Thermal Properties and Excellent UV-Blocking Performance

Zhang, Xiao; Liu, Weifeng; Yang, Dongjie; Qiu, Xueqing

The preparation of biodegradable polymeric materials with both great strength and toughness remains a huge challenge. The natural spider silk exhibits a combined super high tensile strength and high fracture toughness (150–190 J g−1), attributing to the hierarchically assembled nanophase separation and the densely organized sacrificial hydrogen bonds confined in…