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(Natural) polymers

Preparation of cellulose nanofibers from Miscanthus x. Giganteus by ammonium persulfate oxidation

Yang, Han; Zhang, Yefei; Kato, Ryo; Rowan, Stuart J.

(Natural) polymersApplicationCharacteristic dimensionCharacterizationCustomer publicationsMaterialRenewable energyTechniqueWAXS

Preparation of cellulose nanofibers from Miscanthus x. Giganteus by ammonium persulfate oxidation

Yang, Han; Zhang, Yefei; Kato, Ryo; Rowan, Stuart J.

Carboxylic acid functionalized cellulose nanofibers (MxG-CNFA-CO2H) were successfully isolated from a sustainable grass hybrid Miscanthus x. Giganteus by a new two-step chemical oxidation, that involves bleach treatment and ammonium persulfate oxidation, followed by ultrasonication. The resulting MxG-CNFA-CO2Hs have ca. 1200?mmol/kg carboxylic acid surface groups, an aspect ratio of 230 (height…
A highly transparent and ultra-stretchable conductor with stable conductivity during large deformation

Lei, Zhouyue; Wu, Peiyi

(Natural) polymersApplicationCharacterizationCustomer publicationsFractal dimensionMaterialPolymer researchSAXSTechnique

A highly transparent and ultra-stretchable conductor with stable conductivity during large deformation

Lei, Zhouyue; Wu, Peiyi

Intrinsically stretchable conductors have undergone rapid development in the past few years and a variety of strategies have been established to improve their electro-mechanical properties. However, ranging from electronically to ionically conductive materials, they are usually vulnerable either to large deformation or at high/low temperatures, mainly due to the fact…
High-performance polyurethane nanocomposites based on UPy-modified cellulose nanocrystals

Tian, Donglin; Wang, Fenfen; Yang, Zhijun; Niu, Xiling; Wu, Qiang; Sun, Pingchuan

(Natural) polymersApplicationCharacterizationCompositesCustomer publicationsMaterialOrientation analysisPolymer researchSAXSTechnique

High-performance polyurethane nanocomposites based on UPy-modified cellulose nanocrystals

Tian, Donglin; Wang, Fenfen; Yang, Zhijun; Niu, Xiling; Wu, Qiang; Sun, Pingchuan

Densely H-bonding assemblies are the key strategy found by nature to enhance the rupture strength of natural polymers without sacrificing their toughness, such as spider silk, while it still remains a great challenge using such intriguing strategy to prepare high-performance synthesized polymer or biopolymer enhanced polymer nanocomposites. To address this…