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Development and Physical Properties of Film of Wheat Gluten Cross-linked by Transglutaminase

Journal of Wuhan University of Technology(Materials Science) 2005年第1期20卷 78-82页

作者：王金水 College of Food and Bioengineering South China University of TechnologyGuang zhou 510641China The Faculty of Food Engineering Henan University of TechnologyZhengzhou 450052China

Films were developed from the modified wheat glutens by microbial transglutamina se(MTGase, [E/S]=10u/g,15u/g and 20u/g) in order to improve physical and barri er properties of the *** was used as a *** films prepared from the modified-glutens by MTGase show a lower elongation at break(E) and a water vapor permeability(WVP), and a higher tensile strength(TS) than the nati ve gluten *** the modified gluten films by different concentrations of MT Gase are immersed in water at 25℃,their weight losses decreased significantly, and their water resistance increases obviously as expected, compared with the c ontrol gluten films. Moreover, an addition of glycerol as plasticizer greatly mo dified water vapor barrier and mechanical properties of the films.

关键词： wheat gluten microbial transglutaminase barrier properties tensile strengt h elongation at break

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Evaluation of fracture damage of SUS306 structural steel using ultrasonic testing

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Journal of Shanghai University(English Edition) 2009年第4期13卷 279-282页

作者：马世伟袁康张浩韦习成 School of Mechatronics Engineering and Automation Shanghai University School of Materials Science and Engineering Shanghai University

High frequency ultrasonic nondestructive testing was conducted using a direct contact method for SUS306 stainless steel treated by high temperature and fracture tensile tests. Reflected ultrasonic echoes were analyzed. The relationships between the ultrasonic attenuation coefficient, strength of backscattering wave and the elongation at break of the samples were obtained. The damages were evaluated by using these results together with the analysis of microstructure and mechanics of the tested material.

关键词： ultrasonic nondestructive evaluation SUS306 stainless steel elongation at break

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Observation of a Chemical Softener’s Effects on Stem-Specific Lignocellulosic <i>Brassica napus</i>(Type: Canola) (Cultivar: HYHEAR 3) Fiber Quality

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Journal of Textile Science and Technology 2021年第3期9卷 112-130页

作者： Afroza Parvin Mashiur Rahman Douglas J. Cattani University of Manitoba Winnipeg Canada

Chemical softener (Cepreton UN) is used to soften the cellulosic fiber (cotton) in the textile industries to make clothes better to touch. Therefore, this study investigated the effects of Cepreton UN on both physical (length, aspect ratio, contact angle, and moisture regain) and mechanical (load at break, elongation at break, tensile stress, young’s modulus, and tenacity) properties of the lignocellulosic canola (HYREAR 3) fibers extracted from narrow, medium, and wide stems. ANOVA showed that fiber diameter had strong effects on elongation at break, load at break, tensile stress, young’s modulus, and aspect ratio for all fibers. Corrgram values showed that tensile stress, young’s modulus, and aspect ratio were negatively correlated to fiber diameter whereas load at break and tenacity were mostly positively correlated to fiber diameter. The fibers were treated with 2% and 10% Cepreton UN and compared with control fibers. In most cases, the fiber diameter was decreased in both 2% and 10% treated medium stem fibers. The mean values of elongation at break, load at break, tenacity, and contact angle were decreased for 10% and increased for 2% and the mean values of tensile stress, young’s modulus, and aspect ratio were decreased for 2% and increased for 10% treated medium stem fibers. Moisture regain (%) mostly decreased for 2%, and increased for 10% treated fibers. Low pH (4.5) had an almost similar effect on fibers as 2% Cepreton UN. Overall, 2% Cepreton UN treatment is found to be better than 10% to make canola fibers less stiff and low pH was found to be an alternative softener treatment strategy.

关键词： Softener Cepreton UN Load at break Tensile Stress Young’s Modulus Tenacity Contact Angle Aspect Ratio elongation at break Moisture Regain

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The Effect of Stem Diameter on the <i>Brassica napus</i>(Type: Canola) (Cultivar: HYHEAR 3) Fiber Quality

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World Journal of Engineering and Technology 2021年第3期9卷 458-481页

作者： Afroza Parvin Mashiur Rahman Douglas J. Cattani University of Manitoba Winnipeg Canada

A matured canola plant has different types of stems based on the diameter, such as narrow (immature), medium (mature), and wide (over mature). Therefore, this study was focused on investigating the properties of the extracted canola (HYREAR 3) fibers from 3 different diameter of stems (narrow, medium and wide). The physical (average length, aspect ratio, contact angle, and moisture regain) and mechanical (load at break, elongation at break, tensile stress, young’s modulus, and tenacity) properties of fibers were measured. ANOVA showed that stem diameter had effects on all fiber properties except for average length and elongation at break. Fiber diameter also had significant effects on load at break, elongation at break, aspect ratio, tensile stress, and young’s modulus. In corrgram, it was found that tensile stress, young’s modulus, and aspect ratio were negatively correlated to fiber diameter whereas load at break and tenacity were positively associated. Mean values showed that stem diameter had effects on all fiber properties except for average length. The mean values of fiber diameter, load at break, elongation at break, tenacity, and contact angle were highest and the lowest mean values were observed for tensile stress, young’s modulus and aspect ratio in fibers of 7 - 10 mm stems (medium matured), hence found to be less stiff. Moisture regain ability showed that canola fibers isolated from ≥8 mm stem diameter were more hydrophobic whereas contact angle measurement showed relatively more hydrophobic nature of 7 - 10 mm stem fibers. Therefore, this study provided an insightful understanding of the q

关键词： Load at break Tensile Stress Young’s Modulus Tenacity Aspect Ratio elongation at break

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Effects of Heat Treatment on Properties of Polyester Filaments

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Journal of Donghua University(English Edition) 2003年第2期20卷 79-82页

作者：王妮孙润军 College of Textiles Dongkua University Shanghai 200051 College of Textiles Dongkua University Shanghai 200051any properties of polyester filaments such as heat shrinkage tenacity elongation at break and etc. are greatly influenced by drawing so post-drawing is important in downstream processing. As more and more profile fibers and multi-variance fibers used in textile industry the properties of above two kinds of differential polyester filaments after drawing in different heat conditions were studied. Finally following conclusions were obtained: Firstly the tenacity and elongation at break decreases with the rise of Tp. Secondly the tenacity rises but the elongation at break decreases with the increase of Tb. Then when the Tb is low both the shrinkage in boiling water and hi hot air decreases with the rise of Tp while when the Tb is high both the shrinkage rises with the rise of Tp. The last both the shrinkage decreases with the rise of Tb.

Many properties of polyester filaments such as heat shrinkage, tenacity, elongation at break and etc. are greatly influenced by drawing, so post-drawing is important in downstream processing. As more and more profile fibers and multi-variance fibers used in textile industry, the properties of above two kinds of differential polyester filaments after drawing in different heat conditions were studied. Finally following conclusions were obtained: Firstly, the tenacity and elongation at break decreases with the rise of Tp. Secondly, the tenacity rises but the elongation at break decreases with the increase of Tb. Then, when the Tb is low, both the shrinkage in boiling water and hi hot air decreases with the rise of Tp, while, when the Tb is high, both the shrinkage rises with the rise of Tp. The last, both the shrinkage decreases with the rise of Tb.

关键词： polyester filaments heat shrinkage tenacity elongation at break different heat conditions

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Research of Waterborne Polyurethane Modified with Chain Compound Alkyl Siloxane

Research of Waterborne Polyurethane Modified with Chain Comp...

引用

中部四省化学化工学会2016年学术年会

作者： Jiang Tao Zhang Qunchao Zhao Hui School of Materials Science and Engineering Hubei University

Waterborne polyurethane structure system was embedded by N-butyl-3-ammonia propyl triethoxy silane and octyl compound triethoxy silane grafted six methylene diisocyanate trimer(TS).The particle size of miscellaneous dispersions(PU-TS) was dependent on the content of TS modified by siloxane,the particle size increased with the increase of TS content;the bigger the particle size of PU-TS,the lower the *** TS dosage was 10%,the best tensile elongation was 425%;when TS dosage was 15%,the PU-TS hybrid membrane had the highest tensile strength and tensile elongation;siloxane modified PU membrane had a more smooth surface,and with siloxane content increased,the surface would be more *** water absorption and methylbenzene absorption reduced as the increase of TS content.

关键词： waterborne polyurethane chain compound alkyl siloxane elongation at break crosslink

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