Modification of Polylactic Acid Fiber with Enzymatic Treatment

Sawada, Kazuya; Urakawa, Hiroshi; Ueda, Mitsuo

doi:10.1177/0040517507082331

Cited by 19 publications

(9 citation statements)

References 10 publications

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“…On the other hand, enzymatic treatments by A. flavus have been evaluated and validated in textile wastes (Sawada et al, 2007). McMullan et al (2001) reported the biodegradation activity of Aspergillus on textile dyes.…”

Section: Aspergillus Species For Textile Processingmentioning

confidence: 99%

The potential of Aspergillus species in transformation of agricultural products for sustainable production of textile and leather industries in Tanzania

Zekeya¹,

Mtambo²,

Ndaro³

et al. 2017

Afr. J. Biotechnol.

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Manufacturing industries contribute about 8% of the gross domestic products (GDP) whereas leather and textile industries supply 18% employments of manufacturing industries in Tanzania. Manufacturing industries merely depend on agriculture for raw materials and other inputs. However, processing of leather and textiles requires a lot of inputs, many of them supplied from agricultural produce and some are imported from developed nations. In vast developing countries, including Tanzania, manufacturing industries are constrained by limited production technology and the allied costs than raw materials. The conventional processing of leather and textiles requires immense technological investment that is associated with high production cost. In Tanzania, inputs such as soaking, bating and tanning agents for tannery industries are expensive and sometimes not readily available due to importation costs. On the other hand, management of waste effluents from leather and textile processing is the major impediment for development of these industries. However, natural processing of covering materials by using fungal biotechnology is of great concern in Tanzania to avert the prevailing constrains. The application of fungal based biotechnology would reduce production cost and health consequences resulting from chemicals, particularly, chromium. The effects of toxic chemicals from leather and textile industries would be mitigated by employing non-viable Aspergillus biomass in the industrial processes.

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Section: Aspergillus Species For Textile Processingmentioning

confidence: 99%

The potential of Aspergillus species in transformation of agricultural products for sustainable production of textile and leather industries in Tanzania

Zekeya¹,

Mtambo²,

Ndaro³

et al. 2017

Afr. J. Biotechnol.

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“…al. [55] studied the modifi cation of PLA fi bre with enzymatic treatment using various kinds of protease and lipase. PLA fi bre was hydrolyzed by the proteases derived from Bacillus subtilis and Bacillus licheniformis, which easily gain access to the inside of the fi bre.…”

Section: Finishingmentioning

confidence: 99%

“…PLA fi bre was hydrolyzed by the proteases derived from Bacillus subtilis and Bacillus licheniformis, which easily gain access to the inside of the fi bre. The hydrolysis of PLA fi bres with these enzymes resulted in a serious drop in fi bre strength, although fi bre weight loss is lower as evaluated by measuring fi bre weight loss, testing the tear strength, and observing the fi bre surface with SEM [55].…”

Section: Finishingmentioning

confidence: 99%

Overview of Poly(lactic acid) (PLA) fibre

2010

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Poly(lactic acid) (PLA) is an aliphatic polyester which can be derived from 100% renewable resources. PLA fi bres can be dyed with disperse dyes, just like PET fi bres, although a modifi ed wet processing processes are employed. A variety of wet processing applications (pretreatment, dyeing, clearing, and subsequent fi nishing treatments) that imparts the greatest chemical and physical effect on the PLA fi bres necessitate major attention. Part II of this review reviews the wet processing (pretreatment, dyeing, clearing, subsequent fi nishing treatments, washing etc.) of PLA fi bre and its effects on the fi bre. This was accomplished through a broad literature survey including recent research and development in the area.Poly(lactic acid) (PLA), the fi rst melt-processable natural-based synthetic fi bre produced from annually renewable resources [1,2], combines ecological advantages with excellent performance in textiles. It is an aliphatic polyester which can be derived from 100% renewable resources such as corn [3] (Fig. 1). The processability of PLA is equivalent to that of petroleum-based synthetic materials, where PLA polymer uses conventional polyester type fi bre melt spinning processes. PLA fi bres use conventional spinning machinery. PLA fabrics also use conventional dyeing and fi nishing machinery.PLA fi bres can be dyed with disperse dyes, just like PET fi bres, although modifi ed wet processing processes are employed. A variety of wet processing applications that imparts the greatest chemical and physical effect on PLA fi bres necessitate major attention. A better understanding of PLA fi bre and the possible effects of different wet processing treatments during production and after-care procedures during usage by the consumer is vital. Finding the best conditions and methods for wet processing and after-care applications for PLA-based textile products will increase the performance of this naturalbased melt-spinnable PLA fi bre. The aim of Part II of this review paper is to review the wet processing (pretreatment, dyeing, clearing, subsequent fi nishing treatments, washing etc.) of PLA fi bre and its effects on the fi bre. Poly(lactic acid) (PLA) fi bre and its production, properties, performance, environmental impact, and end-use applications were reviewed and summarized in the fi rst part of this review. Wet Processing of PLA fi bresPLA shows many properties that are similar to those of other synthetic fi bres. PLA fi bres can be manufactured by bulk dyeing before spinning using a polymer concentrate of the same dyes as for PET fi bres [4]. However, PLA requires modifi ed dyeing and fi nishing techniques to maximize its benefi ts. It can be dyed with disperse dyes, just like PET fi bres, under high temperature and pressure although a modifi ed dyeing method is employed since PLA has low affi nity to conventional watersoluble dyes [5]. Conventional processes and fi nishing technologies can be used for processing PLA fabrics [6]. The processing temperatures conventionally used for PET need to be red...

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“…PLA is highly marketable due to the low unit cost of its raw materials, it is available from renewable agricultural resources, and it is biodegradable. Therefore, with the ongoing development and manufacture of various types of PLA fibers such as nonwoven, woven, and knit fabrics (Lee & Song, 2011a;Sawada et al, 2007;Steinbüchel, 2002), PLA has the potential to replace conventional petrochemical-based polymers in the textile industry (Lee & Song, 2011b).…”

Section: Introductionmentioning

confidence: 99%

Effect of Enzymatic Hydrolysis on Polylactic Acid Fabrics by Lipases from Different Origins

Lee¹,

Song²

2012

Journal of the Korean Society of Clothing and Textiles

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This study measured the effect of general pre-treatment on PLA fabrics to confirm the benefits of enzymatic processing on PLA fabrics in the textile industry as well as evaluated the hydrolytic activities of three lipases. The effects of lipase hydrolysis were analyzed through moisture regain, dyeing ability, tensile strength, and surface morphology. As a result, PLA fibers were easily damaged by a low concentration of sodium hydroxide and a low treatment temperature. The optimal treatment conditions of Lipase from Candida cylindracea were pH 8.0, 40 o C, and 1,000 U. The optimal treatment conditions for Lipase from Candida rugosa were pH 7.2, 37 o C, and 1,000 U. The optimal treatment conditions for Lipase from Porcine pancreas were pH 8.0, 37 o C, and 2,000 U. The moisture regain and dyeing ability of PLA fabrics increased and the tensile strength of PLA fabrics decreased. The results of surface morphology revealed that there were some cracks due to hydrolysis on the surface of the fiber.

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Modification of Polylactic Acid Fiber with Enzymatic Treatment

Cited by 19 publications

References 10 publications

The potential of Aspergillus species in transformation of agricultural products for sustainable production of textile and leather industries in Tanzania

The potential of Aspergillus species in transformation of agricultural products for sustainable production of textile and leather industries in Tanzania

Overview of Poly(lactic acid) (PLA) fibre

Effect of Enzymatic Hydrolysis on Polylactic Acid Fabrics by Lipases from Different Origins

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