Preparation and Properties of Keratin/CMC Blend Membranes

In this work, the wool keratin solution was obtained by a reduction method, and mixed with sodium carboxymethyl cellulose (CMC) solution in order to prepare blend membranes. The structures and mechanical properties of the blend membranes with different keratin/CMC ratios were investigated. It was found the addition of CMC with good molding ability improved the smoothness and enhanced mechanical properties of membranes. The results of instrument analyses showed that the crystallinity, thermal stability and hydration performance of blend membranes were between those of pure keratin and CMC membranes. CMC exhibited good ability to improve the film-forming of keratin membrane.

Download Full-text

Rheological Properties of Film-Forming Solutions and Mechanical Properties of Edible Composite Films Based on Sodium Alginate, Sodium Carboxymethyl Cellulose and Gelatin

Journal of Biobased Materials and Bioenergy ◽

10.1166/jbmb.2018.1736 ◽

2018 ◽

Vol 12 (1) ◽

pp. 28-33 ◽

Cited By ~ 1

Author(s):

Liqiang Wang ◽

Osvaldo Campanella ◽

Bhavesh Patel ◽

Shufeng Ma ◽

Di Liu ◽

...

Keyword(s):

Mechanical Properties ◽

Rheological Properties ◽

Sodium Alginate ◽

Carboxymethyl Cellulose ◽

Composite Films ◽

Sodium Carboxymethyl Cellulose ◽

Film Forming

Download Full-text

Optically Active Polyurethane/Silica Aerogel Coated Cotton Fabrics for Thermal Protection

Frontiers in Materials ◽

10.3389/fmats.2021.681678 ◽

2021 ◽

Vol 8 ◽

Author(s):

Ling Lin ◽

Ziyin Li ◽

Haiyan Mao ◽

Wenyao Li ◽

Chaoxia Wang

Keyword(s):

Mechanical Properties ◽

Thermal Stability ◽

Thermal Protection ◽

Cotton Fabrics ◽

Retention Performance ◽

Thermal Insulating ◽

Film Forming ◽

Warmth Retention ◽

Coated Fabrics ◽

Coated Cotton

Application of SiO2 aerogel in thermal protective clothing has been limited due to its brittle nature, ordinary mechanical properties, and poor film forming performance. This work is aimed to develop thermal protective cotton fabrics by coating blended OPU/SiO2 aerogel with enhanced mechanical properties and thermal protection performance. The OPU/SiO2 aerogel composites with different ratio were applied onto cotton fabrics by knife-coating. The morphology, chemical component, crystalline structure, thermal stability and compression strength were characterized by scanning electron microscopy (SEM), Fourier transfer Infrared spectroscopy (FTIR), X-ray diffraction (XRD), thermogravimetric analysis (TG) and compression test, respectively. Besides, the warmth retention performance and heat protection performance together with air and moisture permeability of the coated fabrics were studied. The results showed that OPU/SiO2 aerogel were successfully coated onto cotton fabrics with enhanced mechanical properties and thermal stability together with better film forming capacity. The heat transfer coefficient of the coated cotton fabrics was distinctly dropped due to the synergistic effect of OPU and SiO2 aerogel, which resulted in higher warmth retention. The OPU/SiO2 aerogel coated fabrics exhibited obvious heat insulation performance with its surface temperate almost 4°C than the uncoated fabrics. This work demonstrates a new strategy of fabricating stronger thermal insulating textiles using OPU/SiO2 aerogel composites.

Download Full-text

Experimental Studies on the Mechanical Properties of Loess Stabilized with Sodium Carboxymethyl Cellulose

Advances in Materials Science and Engineering ◽

10.1155/2019/9375685 ◽

2019 ◽

Vol 2019 ◽

pp. 1-8 ◽

Cited By ~ 4

Author(s):

Hongwang Ma ◽

Qi Ma

Keyword(s):

Mechanical Properties ◽

Tensile Strength ◽

Compressive Strength ◽

Carboxymethyl Cellulose ◽

Experimental Studies ◽

Loess Soil ◽

Sodium Carboxymethyl Cellulose ◽

Dry Density ◽

Maximum Dry Density ◽

Split Tensile Strength

This research investigated the use of sodium carboxymethyl cellulose (CMC) as a reinforcement to improve mechanical properties of loess soil found in northwestern China. The mechanical properties of loess were determined by unconfined compressive strength and split tensile strength tests. Three different contents of CMC were adopted: 0.5%, 1.0%, and 1.5%. The results showed that utilizing CMC reduced the maximum dry density of the loess. The compressive strength, tensile strength, and Young’s modulus are enough to construct low-rise buildings when the CMC content exceeds 1.0%, based on existing standards. This research thus provides a prospective sustainability method for loess stabilization.

Download Full-text

Comparative Study of Polyimides Containing Oxadiazole and Ether Groups

High Performance Polymers ◽

10.1177/0954008309339202 ◽

2009 ◽

Vol 21 (5) ◽

pp. 522-534 ◽

Cited By ~ 18

Author(s):

Maria Bruma ◽

Mariana Dana Damaceanu ◽

Peter Muller

Keyword(s):

Mechanical Properties ◽

Thermal Stability ◽

High Temperature ◽

Comparative Study ◽

Aromatic Diamine ◽

Polycondensation Reaction ◽

Free Standing ◽

Aromatic Polyimides ◽

Film Forming ◽

As Solubility

An aromatic diamine with a preformed oxadiazole ring and various dianhydrides with ether and other flexible or bulky groups, such as isopropylidene, hexafluoroisopropylidene, cyclohexylidene or fluorenylidene, were used in a polycondensation reaction at high temperature to produce poly(oxadiazole-ether-imide)s. The properties of these polymers such as solubility, film-forming ability, thermal stability and photoluminescence were studied and compared with those of related conventional aromatic polyimides. The mechanical properties of the free-standing films obtained from these polyimides were also investigated.

Download Full-text