Selection of pectinolytic fungi for degumming of natural fibers

1989 ◽  
Vol 11 (12) ◽  
pp. 899-902 ◽  
Author(s):  
M. C. Baracat ◽  
C. Valentim ◽  
J. J. Muchovej ◽  
D. O. Silva
Keyword(s):  
Natural Fibers ◽  
Selection Of

A statistical analysis of low-stress mechanical properties of warp-knitted fabrics

2016 ◽  
Vol 88 (4) ◽  
pp. 467-479 ◽  
Author(s):  
Ka-yan Yim ◽  
Chi-wai Kan
Keyword(s):  
Mechanical Properties ◽  
Evaluation System ◽  
Natural Fibers ◽  
Physical Parameters ◽  
Knitted Fabrics ◽  
Fabric Hand ◽  
Low Stress Mechanical Properties ◽  
Fabric Weight ◽  
Fabric Structures ◽  
Selection Of

Fabric hand is an indispensable characteristic for the selection of fabric and product development and the buying consideration for manufacturers and consumers. However, there is little comprehensive work on the hand feel property of warp-knitted fabrics due to the mainstream natural fibers (cotton, wool and silk) and other fabric structures (woven, weft-knitted and nonwoven). The increasing potential for the wide variety of applications and development of warp-knitted fabrics is not only because its fabric hand gives better determination for fabric marketing, but also because it provides extensive scope for fabric performance and appearance. This paper reports an experimental study on the integrated fabric hand behavior of a series of warp-knitted fabrics made for various apparel applications, such as sportswear, lingerie and leisure wear. These 105 fabrics were produced by varying different physical parameters, including fabric weight and fabric thickness. The Kawabata Evaluation System for Fabric (KES-F) was employed to obtain the fabric hand properties (primary hand value and total hand value) related with stiffness, smoothness and softness. All low-stress mechanical properties and fabric hand values from the testing results were used to verify the applicability of the KES-F on warp-knitted fabrics and to analyze the relationships of fabric parameters and hand characteristics. The results indicate that the KES-F is an appropriate tool to measure the hand attributes of warp-knitted samples, and moderate correlations between physical properties and mechanical behavior were found.

Fourier-Transform Infrared Spectroscopy of Environmentally Weathered Textile Fabrics for Enhanced Microplastic Identification

2021 ◽  
Author(s):  
Shreyas Patankar ◽  
Ekaterina Vassilenko ◽  
Mathew Watkins ◽  
Anna Posacka ◽  
Peter Ross
Keyword(s):  
Fourier Transform ◽  
Infrared Spectroscopy ◽  
Fourier Transform Infrared Spectroscopy ◽  
Infrared Spectra ◽  
Environmental Fate ◽  
Uv Light ◽  
Natural Fibers ◽  
Fourier Transform Infrared ◽  
Ambient Conditions ◽  
Selection Of

<p>Microplastic pollution in oceans is among the global environmental concerns of our time. Emerging research on ocean environments indicates that microfibers, such as those originating from textiles, are some of the most commonly occurring type of microplastic contaminants. While Fourier-transform infrared spectroscopy (FTIR) is commonly used to identify and characterize pollutant samples obtained from the environment, this identification is challenging because infrared spectra of materials can be modified by exposure to the ocean, air, UV light, and other ambient conditions, in a process referred to as “weathering”. We report preliminary efforts in improving FTIR characterization of microplastics by building a library of infrared spectra of common textile fibers weathered under a selection of ambient conditions. Consumer textile materials including polyester, nylon, cotton, and other, were exposed to a selection of ambient conditions: ocean, air, and wastewater treatment stages, in a controlled weathering experiment. Infrared spectra were monitored for up to 52 weeks, with the resulting data illuminating on the environmental fate and longevity of synthetic and natural fibers. Spectral changes caused by weathering were found to depend strongly on both the composition of the material and the specific ambient conditions. This library of weathered material spectra is useful not only in easier identification of environmental microfibers, but also in helping us estimate the duration and manner of weathering that a given environmental microfiber may have experienced.</p>

Substitution of Synthetic Fibers by Bio-Based Fibers in a Structural Mortar

2022 ◽  
Author(s):  
Marie Audouin ◽  
Nicolas Philippe ◽  
Fabien Bernardeau ◽  
Mariann Chaussy ◽  
Sergio Pons Ribera ◽  
...  
Keyword(s):  
Carbon Capture ◽  
Natural Fibers ◽  
Second Step ◽  
Synthetic Fibers ◽  
Chemical Treatments ◽  
Formulation Parameters ◽  
Metallic Fibers ◽  
Important Objective ◽  
Over Time ◽  
Selection Of

The use of bio-based material is now widespread in insulation concrete, for example hemp concrete. The bio-based materials in concrete provide many advantages: lightness, sound and thermal insulation, hydrothermal regulation while contributing to a reduction in the environmental impact due to the carbon capture during the plant growth. The development of materials incorporating plant is therefore an important objective for the construction. The next step will be to introduce bio-based materials in structural mortars and concretes. The project FIBRABETON proposes to substitute synthetic or metallic fibers by natural fibers in screed and slab. After a selection of biomass on the resources availability, separation and fractionation are the key step in processing to obtain technical natural fibers. Bulk fiber shaping and packaging methods for easy handling and transportation are tested. Then, functionalization of technical natural fibers by physical & chemical treatments to improve the durability with cement paste is carried out. The second step concerns the introduction of treated or not treated fibers in mortar and concrete formulations. The variation of the nature of the biomass, fibers shape and dosage in concrete are studied. The workability, the compressive strength and withdrawal resistance are measured in order to obtain the best formulation parameters. The evolution of properties over time is also evaluated. The project FIBRABETON is carried out with ESTP, FRD and Vicat and is subsidized by ADEME, Grand Est region and FEDER.

Selection of natural fibers based brake friction composites using hybrid ELECTRE-entropy optimization technique

2020 ◽  
Vol 89 ◽  
pp. 106614 ◽  
Author(s):  
Tej Singh ◽  
Punyasloka Pattnaik ◽  
Catalin I. Pruncu ◽  
Avinash Tiwari ◽  
Gusztáv Fekete
Keyword(s):  
Optimization Technique ◽  
Natural Fibers ◽  
Entropy Optimization ◽  
Selection Of

Gray optimization of process parameters of surface modification of coconut sheath reinforced polymer composites

2013 ◽  
Vol 33 (7) ◽  
pp. 665-672 ◽  
Author(s):  
Irullappasamy Siva ◽  
Jebas Thangaih Winowlin Jappes ◽  
Pandian Pitchipoo ◽  
Sandro Campos Amico ◽  
Erumaipatty Rajagounder Nagarajan ◽  
...  
Keyword(s):  
Surface Modification ◽  
Natural Fiber ◽  
Treatment Time ◽  
Natural Fibers ◽  
Technical Information ◽  
Interfacial Strength ◽  
Bath Temperature ◽  
Reinforced Polymer ◽  
Optimization Of Process Parameters ◽  
Selection Of

Abstract Surface modification of natural fiber may greatly enhance the mechanical interlocking between fiber and matrix. Although there are many reports on surface modification of natural fibers, little technical information is available to enable the selection of optimized surface modification conditions. In this work, treatment parameters, such as bath temperature, agent concentration, and treatment time, are optimized to achieve higher interfacial adhesion. The effect of these parameters on flexural and impact strength is investigated by applying gray relational techniques. Experimental results show that NaOH concentration and treatment time are significant variables which improve interfacial strength, while NaOH bath temperature appears less important.

scholarly journals Recent Eco-Friendly Developments in Personal Protective Clothing Materials for Reducing Plastic Pollution: A Review

2019 ◽  
Vol 9 (2) ◽  
pp. 4012-4018
Author(s):  
A. H. Memon ◽  
M. H. Peerzada ◽  
K. Muhammad ◽  
S. A. Memon ◽  
S. A. Mangi ◽  
...  
Keyword(s):  
Environmental Economic ◽  
Protective Clothing ◽  
Natural Fiber ◽  
Natural Fibers ◽  
Legal Aspects ◽  
High Tech ◽  
Plastic Pollution ◽  
Environment Friendly ◽  
Plastic Content ◽  
Selection Of

Due to the industrialization increase in the 20th century, the level of hazards for public health and the demand for personnel protective clothing (PPC) have increased. The area of PPC has been steered to high tech equipment made from plastic-based materials, which are derived from non-renewable sources and have a long life cycle expanding from hundreds to thousands of years, after their end of useful life. This paper reviews the information related to conventional plastic-based fibers, their properties, advantages, disadvantages, and applications in the battlefield, industry, automobiles, etc. This paper provides a basis for the selection of natural fibers and the replacement of conventional plastic-based fibers to reduce the plastic content in protective clothing or other composites. A comparative analysis of technological, environmental, economic and legal aspects of plastic-based and environment-friendly natural fibers is presented. Natural fiber-based composite protective clothing is found to be environment-friendly and considered to have prospects for the future due to its comparative technological, environmental, economic and legal advantages.

scholarly journals Materials selection of “green” natural fibers in polymer composite automotive crash box using DMAIC approach in Six Sigma method

2020 ◽  
Vol 15 ◽  
pp. 155892502092077
Author(s):  
NSB Yusof ◽  
SM Sapuan ◽  
MTH Sultan ◽  
M Jawaid
Keyword(s):  
Oil Palm ◽  
Six Sigma ◽  
Natural Fiber ◽  
Material Selection ◽  
Selection Process ◽  
Natural Fibers ◽  
Materials Selection ◽  
Hybrid Form ◽  
Palm Fiber ◽  
Selection Of

This article presents the results of research in selecting the most appropriate natural fibers to be used as reinforcement (normally in the hybrid form) in polymer composites for the automotive crash box by carrying out the materials selection process using the Six Sigma method. The judgment based on results from Six Sigma integrated two decision methods, which were applied using two different approaches in decision making: qualitative method and quantitative method. In this study, oil palm fiber had been proposed as the most appropriate natural fiber to be selected as reinforcement in composite automotive crash box. The DMAIC approach from the Six Sigma method performed an important role by providing various tools for each phase in the material selection process. The final selection process led to selection of oil palm fiber as the best natural fiber to reinforce polyurethane as polymeric matrices due to the satisfaction of all the selection criteria.

scholarly journals Multivariable analysis for selection of natural fibers as fillers for a sustainable food packaging industry

2021 ◽  
Author(s):  
Hafiz T Ali ◽  
Abdulaziz H Alghtani ◽  
Bassem F Felemban ◽  
Kh. Abd El-Aziz ◽  
Dalia Saber ◽  
...  
Keyword(s):  
Food Packaging ◽  
Multivariable Analysis ◽  
Natural Fibers ◽  
Sustainable Food ◽  
Packaging Industry ◽  
Selection Of
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