Spent coffee grounds: Massively supplied carbohydrate polymer applicable to electrorheology

被引：19

作者：

Chun, Youngsang ^{[1
,2
]}

Ko, Young Gun ^{[3
]}

Do, Taegu ^{[1
]}

Jung, Youngkyun ^{[1
]}

Kim, Seung Wook ^{[2
,4
]}

Choi, Ung Su ^{[1
]}

机构：

[1] Korea Inst Sci & Technol, Ctr Urban Energy Res, Hwarang Ro 14-gil 5, Seoul 02792, South Korea

[2] Korea Univ, Coll Engn, Dept Interdisciplinary Biomicro Syst Technol, 145 Anam Ro 5, Seoul 02841, South Korea

[3] Korea Atom Energy Res Inst, Environm Radioact Assessment Team, 989-111 Daedeok Daero, Daejeon 34057, South Korea

[4] Korea Univ, Coll Engn, Dept Chem & Biol Engn, 145 Anam Ro 5, Seoul 02841, South Korea

来源：

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 2019年 / 562卷

关键词：

Spent coffee grounds; Smart colloidal suspension; Electro-response; Electro-gelation; DISPERSED SUSPENSION; SHEAR BEHAVIOR; POROUS CARBON; CELLULOSE; POLYSACCHARIDES; DISCRIMINATION; FABRICATION; MECHANISMS; PARTICLES; PHOSPHATE;

D O I：

10.1016/j.colsurfa.2018.11.005

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Enormous volume of spent coffee grounds in our life is one of interesting method to acquire natural carbon source for several industries. The purpose of this work is considering the discarded organic waste as polysaccharide-based ER materials. Cellulose, hemicellulose and lignin are simple to apply in electro rheological materials based on previous studies. The surface of spent coffee grounds were analyzed by Fourier transform infrared spectroscopy (FT-IR) in order to examine the functional groups which force to ER effect. Thermogravimetric analysis (TGA), X-ray diffraction (XRD) and field-emission gun scanning electron microscope (SEM) were used to characterize promising ER material. Different volume fractions of ER fluid were evaluated in order to determine the optimum condition for high shear stress, storage/loss modulus and temperature stability were also investigated for feasibility.

引用

页码：392 / 401

页数：10

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