EP1694903A1 - Procede de modification de fibres polyacrylonitriles contenant vinylacetate en tant que comonomere et de fibres polyamides au moyen d'une enzyme cutinase - Google Patents

Procede de modification de fibres polyacrylonitriles contenant vinylacetate en tant que comonomere et de fibres polyamides au moyen d'une enzyme cutinase

Info

Publication number
EP1694903A1
EP1694903A1 EP04775191A EP04775191A EP1694903A1 EP 1694903 A1 EP1694903 A1 EP 1694903A1 EP 04775191 A EP04775191 A EP 04775191A EP 04775191 A EP04775191 A EP 04775191A EP 1694903 A1 EP1694903 A1 EP 1694903A1
Authority
EP
European Patent Office
Prior art keywords
enzyme
fibre
fibres
vinyl acetate
comonomer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP04775191A
Other languages
German (de)
English (en)
Inventor
Artur Manuel Cavaco Paulo
Ana Filipa Gonçalves Da Costa CARNEIRO
Carla Manuela Pereira Da Silva
Rita Isabel Lima De Ara Jo
George Guebitz
Margarida Paula Pedra Amorim Casal
Maria Teresa Gonçalves De Macedo MATAMA
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Universidade do Minho
Original Assignee
Universidade do Minho
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Universidade do Minho filed Critical Universidade do Minho
Publication of EP1694903A1 publication Critical patent/EP1694903A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M16/00—Biochemical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. enzymatic
    • D06M16/003—Biochemical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. enzymatic with enzymes or microorganisms

Definitions

  • the quality and the processing properties of filaments in the extrusion line, fibres, yarns and textile f brics can be improved by modifying their surface .
  • the traditional processes used for their modification require chemical agents with negative environmental effects. These negative effects can be prevented by using new processing techniques based on biotechnology.
  • Enzymatic processes can be used to modify the surface of fabrics constituted by synthetic fibres. Hydrolysis of polyacrylonitrile fibres containing vinyl acetate as a comono er and polyamide fibres results in the formation of hydrophilic groups. The increase in these groups at the surface of the fibres provides hydrophilic characteristics, therefore improving the comfort properties. This treatment also allows these fibres to be dyed with specific reactive dyes. Background of the invention
  • Cutinase 3.1.1.74 is an esterase which degrades cutine, a structural polymeric component of plants composed of fatty acids (Carvalho et al . , Biotech . Bioeng. , 1999, 66 , 17-34) . This is an enzyme which is not very specific and which hydrolyses soluble and non-soluble p-nitrophenyl esters and triglycerides .
  • Cutinase is an esterase which shares the catalytic triad of serine-histidine-aspartic acid with other esterases and amidases, meaning that the degradation of amides besides ester groups is theoretically possible.
  • Recent research demonstrates that cutinase has activity in more hydrophobic media due to the external amino acids in the 3D structure (Vidinha et al . (2003) "Effect of immobilization support, water activity and enzyme ionization state on cutinase activity and enantioselectivity in organic media", Biotechn . Bioeng . , accepted) .
  • the chemical agents of fibre modification described in general do not restrict their action to the fibre surface, rather they also penetrate inside and degrade the fibres with deterioration of their properties.
  • One of the treatments that was normally carried out to improve touch and increase the hydrophilicity of synthetic fibres was alkaline treatment with high concentrations of caustic soda. These treatments were damaging, not only to the physical performance of the fibres but also to the environment where the residues of this product were deposited (US20030119172) .
  • This invention describes the use of cutinase to modify the surface of synthetic polyacrylonitrile fibres containing vinyl acetate as a comonomer and polyamide fibres.
  • Superficial hydrolysis of the ester and amide groups of the polyacrylonitrile fibres containing vinyl acetate as a comonomer and polyamide fibres, respectively, causes the formation of hydroxyl groups in the polyacrylonitrile fibres containing vinyl acetate as a comonomer and carboxylic and amino groups in the polyamide fibres .
  • the increase in these groups at the surface of the fibres gives the fabric hydrophilic characteristics, therefore improving the comfort properties.
  • a first embodiment of the invention consists of a method for the treatment of polyacrylonitrile fibre containing vinyl acetate as a comonomer, which comprises the contact of the fibre with an enzyme solution in order to modify the chemical surface of the fibre, increasing the number of hydrophilic hydroxyl groups.
  • a second embodiment of the invention consists of a method for the treatment of polyamide fibre, which comprises the contact of the fibre with an enzyme solution in order to modify the chemical surface of the fibre, increasing the number of hydrophilic amino groups.
  • the treatment of the polyacrylonitrile fibre containing vinyl acetate as a comonomer or the polyamide fibre is preferably carried out using an enzyme with esterase action.
  • the enzyme preferably contains the catalytic triad of serine-histidine-aspartic acid.
  • the abovementioned enzyme esterase is preferably a hydrolase that degrades cutine.
  • the amount of enzyme used is normally between 1 and 400 g of protein per kg of fibre.
  • a treatment bath with a retrievable and reusable enzyme is used.
  • the method consists of the chemical modification of the surface of polyacrylonitrile fibres containing vinyl acetate as a comonomer (constituted by about 93% acrylonitrile and 7% vinyl acetate) and polyamide fibres through the action of a cutinase solution obtained from the heterologous expression of Fusarium solani pisi cutinase, by the Escherichia coli DHB4 transformed strain.
  • the treatment was carried out in a ROTAASH machine that simulates dyeings and other textile treatments.
  • Each container had between 1 and 2U ( ⁇ mol/min as pNPP - paranitrophenolpalmitate) of cutinase activity.
  • Samples of 0.7 g of polyacrylonitrile fabric containing vinyl acetate as a comonomer were washed with water containing 1 g/L of Lutensol and dried at 50 °C.
  • the samples were then placed in a container with 1 U of cutinase, in a bath ratio of 1:35 (p/v) .
  • the treatment was carried out at pH 7.5 and at 30°C, for a period of 700 hours.
  • the samples were removed from the solution, washed with water containing 2 g/L of Na 2 C0 3 and dried at room temperature .
  • the samples treated for 97 hours were dyed with 2% reactive dye (Lanasol Red 66) , obtained from CIBA, using a bath ratio of 1:100, at 60 °C.
  • K/S spectral coefficient

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Biochemistry (AREA)
  • Microbiology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)

Abstract

L'invention concerne un nouveau procédé enzymatique de modification de la surface de fibres synthétiques au moyen d'une enzyme cutinase (3.1.1.74). L'action enzymatique provoque l'hydrolyse des fibres polyacrylonitriles contenant vinylacétate en tant que comonomère, et de fibres polyamides, de manière à améliorer leurs caractéristiques hydrophiles et leurs propriétés de coloration.
EP04775191A 2003-10-29 2004-10-28 Procede de modification de fibres polyacrylonitriles contenant vinylacetate en tant que comonomere et de fibres polyamides au moyen d'une enzyme cutinase Withdrawn EP1694903A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PT103035A PT103035A (pt) 2003-10-29 2003-10-29 Metodo para modificacao das fibras de poliacrilonitrilo com acetato de vinilo como comonomero e de poliamida, utilizando uma enzima cutinase
PCT/PT2004/000025 WO2005040487A1 (fr) 2003-10-29 2004-10-28 Procede de modification de fibres polyacrylonitriles contenant vinylacetate en tant que comonomere et de fibres polyamides au moyen d'une enzyme cutinase

Publications (1)

Publication Number Publication Date
EP1694903A1 true EP1694903A1 (fr) 2006-08-30

Family

ID=34511367

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04775191A Withdrawn EP1694903A1 (fr) 2003-10-29 2004-10-28 Procede de modification de fibres polyacrylonitriles contenant vinylacetate en tant que comonomere et de fibres polyamides au moyen d'une enzyme cutinase

Country Status (5)

Country Link
US (1) US20070275453A1 (fr)
EP (1) EP1694903A1 (fr)
CA (1) CA2543818A1 (fr)
PT (1) PT103035A (fr)
WO (1) WO2005040487A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2145904A1 (fr) 2008-07-18 2010-01-20 Basf Se Procédé d'hydrolyse catalysée par enzymes d'esters d'acide polyacrylique et estérases utilisées à cet effet

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5599698A (en) * 1994-12-27 1997-02-04 Montefibre S.P.A. Modified materials based on polyacrylonitrile and process for their production
FR2736928B1 (fr) * 1995-07-18 1997-10-17 Rhone Poulenc Fibres & Polymer Enzymes ayant une activite amidase micro-organismes susceptibles de produire de telles enzymes et procede d'hydrolyse d'amides en faisant application
DE69737015T2 (de) * 1996-03-06 2007-07-19 The Regents Of The University Of California, Oakland Enzymbehandlung, um die benetzbarkeit und absorptionsfähigkeit von textilien zu erhöhen.

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2005040487A1 *

Also Published As

Publication number Publication date
CA2543818A1 (fr) 2005-05-06
PT103035A (pt) 2005-04-29
WO2005040487A1 (fr) 2005-05-06
US20070275453A1 (en) 2007-11-29

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