Mechanical Properties of Silk Fabric Degummed with Bromelain

Ninpetch, Uraiwan; Tsukada, Masahiro; Promboon, Amornrat

doi:10.1177/155892501501000319

Cited by 12 publications

(12 citation statements)

References 25 publications

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“…Besides, Promboon et al [14] selected a commercial grade stem bromelain as the effective degumming agent for Mai 1 silk filaments. The results indicated that the fibroin was not damaged, and the silk fabric was provided with good physical properties, such as tensile strength with bromelain degumming method, compared with traditional sodium carbonate degumming method.…”

Section: Enzyme Degummingmentioning

confidence: 99%

“…Promboon et al [14] also carried out measurement of tensile strengths of the silk filament degummed with different concentrations of bromelain and compared it with traditional Na 2 CO 3 method. The results showed that when the concentration of bromelain was 4, 5 and 6 g/L, tensile strengths were 5.49 ± 0.43, 4.76 ± 0.48 and 7.84 ± 0.38 N, respectively, significantly higher than that with traditional Na 2 CO 3 method (4.02 ± 0.72 N), while the elongations at break of the silk samples with bromelain method were slightly lower than with traditional Na 2 CO 3 method.…”

Section: Influence Of Degumming On Morphology Of Silk Filamentsmentioning

confidence: 99%

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Recent Advances in Environmentally Friendly and Green Degumming Processes of Silk for Textile and Non-Textile Applications

et al. 2022

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Silk has been widely used not only in the textile field but also in non-textile applications, which is composed of inner fibrous protein, named fibroin, and outer global protein, named sericin. Due to big differences, such as appearance, solubility, amino acid composition and amount of reactive groups, silk fibroin and sericin usually need to be separated before further process. The residual sericin may influence the molecular weight, structure, morphology and properties of silk fibroin, so that degumming of silk is important and necessary, not only in textile field but also in non-textile applications. Traditional textile degumming processes, including soap, alkali or both, could bring such problems as environmental damage, heavy use of water and energy, and damage to silk fibroin. Therefore, this review aims to present a systematic work on environmentally friendly and green degumming processes of raw silk, including art of green degumming process, quantitative and qualitative evaluation, influence of degumming on molecular weight, structure, morphology and properties of silk. It is anticipated that rational selection and design of environmentally friendly and green degumming process is quite important and meaningful, not only for textile application but also for non-textile application.

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Section: Enzyme Degummingmentioning

confidence: 99%

Section: Influence Of Degumming On Morphology Of Silk Filamentsmentioning

confidence: 99%

Recent Advances in Environmentally Friendly and Green Degumming Processes of Silk for Textile and Non-Textile Applications

et al. 2022

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“…The bromelain degummed stuff exhibited a 10% greater improvement reclamation, and its twisting quality was 4% more prominent correlated with the alkali degummed specimen. The treatment with an enzymatic condition, the degummed silk thread exhibits an excellent result in terms of not being demolished in its morphology or its periphery destruction under the scanning electron microscope (SEM) [25]. Subsequently, during the estimation of the mechanical characteristics with the usage of the Kawabata Evaluation System for Fabric, the degummed silk thread with bromelain enzyme treatment exhibits an excellent tensile ability, great repercussion to flexion apoplexy, extreme flexibility, mellifluous realization during flexion, and smooth and superior elasticized characteristic during compression.…”

Section: Bromelain Enzymementioning

confidence: 99%

Extraction of Silk Fibroin with Several Sericin Removal Processes and its Importance in Tissue Engineering: A Review

et al. 2022

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Sericin is a sticky protein substance, which is generated by the silk-worm for holding the filaments of silk tightly. The main constituent of natural crude silk is made up of sericin and fibroin. Fibroin and sericin play a vital role in increasing the strength, stiffness and on maintaining the constructional integrality of the cocoon. This review reports the role of several types of degumming agents for the removal of sericin from silk surfaces and an overview of silk fibroin approaches in the tissue engineering field. The prime factors responsible for the removal of sericin (degumming) from silk were systematically analyzed and discussed. The key factors affects on modification of the silk surface are includes surfactant, degumming time, temperature, advanced techniques such as ultra-sonication, microwave radiation, infrared radiation, low-temperature oxygen plasma radiation, and PH. These factors influence either individually or cumulatively at the degumming process. Tissue engineering is an emanate and most optimistic approach to restore tissue malfunction by adopting the concept of the technology being practiced using numerous biomaterials, cells, and the nutrient-specific growth factors. Different types of materials include various bio-material and mainly of silk fibroin constituent of it is conceding most optimistic biomaterials in tissue engineering application. Silk fibroin is a naturalistic protein-based polymer with an eminent physiochemical characteristic, are magnificent biocompatibility, amenable biodegradability, proper oxygen, and water-vapor permeability, and least inflammatory reaction. The critical studies accomplishing on the role of Silk fibroin and various approaches adopted in the degumming process is extensively reviewed and reported.

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“…Green degumming of silk provides a better result and also reduces the load of effluent on environment. Degumming improves the sheen, color, hand, and texture of the silk [23]. Silk fibroin is not only a valuable textile material but also an attractive biomaterial in several medical fields such as tissue engineering, drug delivery, optics, sensing, diagnostics [24]- [30].…”

Section: Introductionmentioning

confidence: 99%

Green Degumming of Silk by Enzyme Extracted from Natural Sources

Rahman¹,

Bhowmik²,

Das³

et al. 2020

MSCE

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The main objective of this work is to degum the silk with natural enzyme in lieu of conventional degumming to make it sustainable. Fibroin and sericin are the main composition of silk. Sericin provides a harsh and stiff effect of silk and decreases the valuable property like luster and whiteness and also leads to uneven dyeing. It is necessary to remove this sericin for the better post processing of silk. The removal process of sericin from silk is called degumming. Usually degumming process is done by using chemicals like soda (Na 2 CO 3 ), detergent and other chemical staffs. But these chemicals are lethal to the environment. So, if such component found that can be substitute the fatal components and give the same required result or very close then that would be considered as an asset. This work deals with the different enzymes extracted from natural sources such as papaya skin, pineapple skin and guava leaf with variation of enzyme concentrations such as 10 (%), 15 (%) & 20 (%) as well as 35˚C 45˚C & 55˚C temperatures that influence the degumming efficiency. By analyzing the various samples on the basis of degumming efficiency and other tests such as tensile strength, water vapor permeability, pilling and abrasion, crease recovery, whiteness test and spot test are done by standard method, it is found that the enzyme extracted from papaya skin shows the best degumming efficiency 15.9 (%) and other tests also show the good result at 15 (%) concentration and 45˚C temperature whereas degumming efficiency 16.6 (%) for conventional process. From this work, it can be concluded that enzyme extracted from papaya skin can be substituted of conventional degumming which is also ecofriendly.

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Mechanical Properties of Silk Fabric Degummed with Bromelain

Cited by 12 publications

References 25 publications

Recent Advances in Environmentally Friendly and Green Degumming Processes of Silk for Textile and Non-Textile Applications

Recent Advances in Environmentally Friendly and Green Degumming Processes of Silk for Textile and Non-Textile Applications

Extraction of Silk Fibroin with Several Sericin Removal Processes and its Importance in Tissue Engineering: A Review

Green Degumming of Silk by Enzyme Extracted from Natural Sources

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