WO2005040487A1 - Method for the modification of polyacrylonitrile fibres containing vinyl acetate as a comonomer and polyamide fibres, using a cutinase enzyme - Google Patents
Method for the modification of polyacrylonitrile fibres containing vinyl acetate as a comonomer and polyamide fibres, using a cutinase enzyme Download PDFInfo
- Publication number
- WO2005040487A1 WO2005040487A1 PCT/PT2004/000025 PT2004000025W WO2005040487A1 WO 2005040487 A1 WO2005040487 A1 WO 2005040487A1 PT 2004000025 W PT2004000025 W PT 2004000025W WO 2005040487 A1 WO2005040487 A1 WO 2005040487A1
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- WO
- WIPO (PCT)
- Prior art keywords
- enzyme
- fibre
- fibres
- vinyl acetate
- comonomer
- Prior art date
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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
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- 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
This invention relates a new enzymatic process for the modification of the surface of synthetic fibres using a cutinase enzyme (3.1.1.74). The enzymatic action causes the hydrolysis of the polyacrylonitrile fibres containing vinyl acetate as a comonomer and polyamide fibres, improving their hydrophilic characteristics and dyeing properties.
Description
DESCRIPTION
"METHOD FOR THE MODIFICATION OF POLYACRYLONITRILE FIBRES CONTAINING VINYL ACETATE AS A CO ONOMER AND POLYAMIDE FIBRES, USING A CUTINASE ENZYME"
Field of the invention
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 . Several patents exist relating to the genetic enhancement of Fusarium solani cutinases and their application in the formulation of detergents for washing machines and dishwashers. These products have shown better lipolytic action than other products previously used (IN183592, EP1290150, AU1503800, AU5488090, US5512203, W09414964, GB2296011, O8809367, EP0399681) . In the textile field, the use of cutinases to reduce backstaining during stone-wash processes in cotton denim fabrics is also described (CA2413838, US2002066144) . Cutinase is also described as being able to degrade aliphatic and aromatic polyesters (US6255451) .
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) .
Several chemical methods have been used in order to improve the structure of polya ide fibre. The modification of this fibre, according to the method described in the patent GB1072070, is carried out by acylation of the peptidic groups as well as of the terminal amino groups of the polyamide for greater polyamide reactivity. Another method already described in the patent US5599698 specifies the treatment of polyacrylonitrile fibre containing vinyl acetate as a comonomer with a nitryl hydratase enzyme, in order to modify its hydrophilicity and consequently its comfort properties, also allowing the polyacrylonitrile fibres containing vinyl acetate as a comonomer to be dyed with acid dyes.
Detailed Description of the Invention
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. This treatment also allows the polyacrylonitrile fibre containing vinyl acetate as a comonomer to be dyed with reactive dyes (used for cotton) and the polyamide fibre to be dyed with reactive dyes (used for wool) . To date, no method for the modification of the vinyl acetate comonomer of acrylic or polyamide has been described in scientific literature or patents .
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.
In both of the embodiments described above, a treatment bath with a retrievable and reusable enzyme is used. Examples
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 (μmol/min as pNPP - paranitrophenolpalmitate) of cutinase activity.
Example 1 :
Enzymatic modification of polyacrylonitrile fibre containing vinyl acetate as a comonomer
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 Na2C03 and dried at room temperature .
Hydrolysis was confirmed by the formation of acetic acid and the dyeing of the treated samples. No acetic acid was detected in the treatment baths. The samples were dyed with 2% reactive dye Remazol Brilliant
Blue, using a bath ratio of 1:50 (p/v), at 70°C. In the samples treated for 700 hours with the enzymatic solution of cutinase, the value of K/S (spectral coefficient) increased by an average of 30% in relation to the non- treated sample .
Example 2 :
Enzymatic modification of polyamide fibre
Similar treatments were carried out to polyamide fabric using the following parameters: fabric samples of 1 g were washed with water containing 1 g/L of Lutensol and dried at 40 °C. They were then placed in a specific container in the ROTAWASH machine with 2 U of cutinase, in a bath ratio of 1:200 (p/v) . The treatment was carried out at pH 8.5 at 30 °C, for a period of 97 hours. The samples were removed from the solution, washed with water containing 2 g/L of Na2C03 and dried at 40°C. The hydrolysis that occurred in the samples treated with the enzymatic solution was verified through dyeing with a reactive dye. 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. In the samples treated, the value of K/S (spectral coefficient) increased in relation to the non-treated sample by 11.67% (60°C) .
Claims
1. Method for the treatment of polyacrylonitrile fibre containing vinyl acetate as a comonomer, characterised in that it 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.
2. Method according to claim 1, characterised in that it comprises the treatment of the polyacrylonitrile fibre containing vinyl acetate as comonomer with an enzyme with esterase action.
3. Method according to claim 1, characterised in that the enzyme contains the catalytic triad of serine- histidine-aspartic acid.
4. Method according to claim 1, characterised in that the enzyme esterase is a hydrolase that degrades cutine.
5. Method according to claim 1, characterised by the use of an amount of enzyme between 1 and 400 g of protein per Kg of fibre.
6. Method for the treatment method of polyamide fibre, characterised in that it 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.
7. Method according to claim 6, characterised in that it comprises the treatment of the polyamide fibre with an enzyme with esterase action.
8. Method according to claim 6, characterised in that the enzyme contains the catalytic triad of serine- histidine-aspartic acid.
9. Method according to claim 6, characterised in that the enzyme esterase is a hydrolase that degrades cutine.
10. Method according to claim 6, characterised by the use of an amount of enzyme between 1 and 400 g of protein per Kg of fibre.
11. Method according to claims 1 and 6, characterised by the use of a treatment bath with a retrievable and reusable enzyme.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US10/577,012 US20070275453A1 (en) | 2003-10-29 | 2004-10-28 | Method for the Modification of Polyacrylonitrile Fibres Containing Vinyl Acetate as a Comonomer and Polyamide Fibres, Using a Cutinase Enzyme |
| EP04775191A EP1694903A1 (en) | 2003-10-29 | 2004-10-28 | Method for the modification of polyacrylonitrile fibres containing vinyl acetate as a comonomer and polyamide fibres, using a cutinase enzyme |
| CA002543818A CA2543818A1 (en) | 2003-10-29 | 2004-10-28 | Method for the modification of polyacrylonitrile fibres containing vinyl acetate as a comonomer and polyamide fibres, using a cutinase enzyme |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PT103035A PT103035A (en) | 2003-10-29 | 2003-10-29 | METHOD FOR MODIFYING POLYACRYLONYRYL FIBERS WITH VINYL ACETATE AS A COMONOMER AND POLYAMIDE, USING A CUTINASE ENZYME |
| PTPT103035 | 2003-10-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2005040487A1 true WO2005040487A1 (en) | 2005-05-06 |
Family
ID=34511367
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/PT2004/000025 WO2005040487A1 (en) | 2003-10-29 | 2004-10-28 | Method for the modification of polyacrylonitrile fibres containing vinyl acetate as a comonomer and polyamide fibres, using a cutinase enzyme |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20070275453A1 (en) |
| EP (1) | EP1694903A1 (en) |
| CA (1) | CA2543818A1 (en) |
| PT (1) | PT103035A (en) |
| WO (1) | WO2005040487A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2145904A1 (en) * | 2008-07-18 | 2010-01-20 | Basf Se | Method for enzyme-catalysed hydrolysis of polyacrylic acid esters and esterases to be used |
Citations (3)
| 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 |
| US6066494A (en) * | 1996-03-06 | 2000-05-23 | The Regents Of The University Of California | Enzyme treatment to enhance wettability and absorbency of textiles |
| US6180388B1 (en) * | 1995-07-18 | 2001-01-30 | Rhone-Poulenc Fibres Et Polymeres S.A. | Enzymes and micro organisms with amidase activity which hydrolyze polyamides |
-
2003
- 2003-10-29 PT PT103035A patent/PT103035A/en active IP Right Grant
-
2004
- 2004-10-28 EP EP04775191A patent/EP1694903A1/en not_active Withdrawn
- 2004-10-28 US US10/577,012 patent/US20070275453A1/en not_active Abandoned
- 2004-10-28 WO PCT/PT2004/000025 patent/WO2005040487A1/en active Application Filing
- 2004-10-28 CA CA002543818A patent/CA2543818A1/en not_active Abandoned
Patent Citations (3)
| 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 |
| US6180388B1 (en) * | 1995-07-18 | 2001-01-30 | Rhone-Poulenc Fibres Et Polymeres S.A. | Enzymes and micro organisms with amidase activity which hydrolyze polyamides |
| US6066494A (en) * | 1996-03-06 | 2000-05-23 | The Regents Of The University Of California | Enzyme treatment to enhance wettability and absorbency of textiles |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2145904A1 (en) * | 2008-07-18 | 2010-01-20 | Basf Se | Method for enzyme-catalysed hydrolysis of polyacrylic acid esters and esterases to be used |
| WO2010007155A1 (en) * | 2008-07-18 | 2010-01-21 | Basf Se | Method for the enzyme-catalysed hydrolysis of polyacrylic acid esters, and esterases used therefor |
| US8617858B2 (en) | 2008-07-18 | 2013-12-31 | Basf Se | Method for the enzyme-catalysed hydrolysis of polyacrylic acid esters, and esterases used therefor |
| US9587257B2 (en) | 2008-07-18 | 2017-03-07 | Basf Se | Method for the enzyme-catalysed hydrolysis of polyacrylic acid esters, and esterases used therefor |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2543818A1 (en) | 2005-05-06 |
| PT103035A (en) | 2005-04-29 |
| EP1694903A1 (en) | 2006-08-30 |
| US20070275453A1 (en) | 2007-11-29 |
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