CN102899926B - Method of applying alkali modified xanthan gum to textile printing - Google Patents
Method of applying alkali modified xanthan gum to textile printing Download PDFInfo
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- CN102899926B CN102899926B CN201210425856.4A CN201210425856A CN102899926B CN 102899926 B CN102899926 B CN 102899926B CN 201210425856 A CN201210425856 A CN 201210425856A CN 102899926 B CN102899926 B CN 102899926B
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- xanthan gum
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Abstract
The invention relates to a method of applying alkali modified xanthan gum to textile printing. The method includes the steps of: carrying out vacuum drying on xanthan gum to constant weight, preparing an aqueous solution of xanthan gum, with concentration of 0.007-0.015mol/L, modifying the aqueous solution through sodium hydroxide under uniform temperature to obtain alkali modified xanthan gum, wherein the molar ratio of the xanthan gum structural units to the sodium hydroxide is 1:(0.1-1.2); testing the rheological properties, namely the intrinsic viscosity and the apparent viscosity, of the alkali modified xanthan gum paste; and dyeing and printing the textile product and testing the printing quality of the textile product. The method disclosed by the invention is good in repeatability, low in requirement on the processing equipment and is simple and convenient, so the method is good for industrial production. The elastic effect of the alkali modified xanthan gum paste system is reduced and the alkali modified xanthan gum paste presents stronger viscidity behavior, thereby being good for the paste to transfer onto the textile product through meshes, so the mesh permeability of the paste, the tinctorial yield on the surface of the textile product, the permeability and the color and luster uniformity are improved; and the alkali modified xanthan gum paste can be used for printing fine patterns. Therefore, the method of applying alkali modified xanthan gum to textile printing has an abroad prospect of application to textile printing.
Description
Technical field
The invention belongs to textile printing process field, particularly a kind of alkali modification xanthans is applied to the method for textile printing.
Background technology
Printing gum is the focus that people pay close attention to all the time.Aspect dye printing, generally adopt sodium alginate as printing paste with active dye both at home and abroad, have that easy coloring, tinctorial yield are high, lovely luster and a feature such as PRINTED FABRIC is soft.Sodium alginate exists some defects simultaneously, as not resistance to strong acid, highly basic and heavy metal ion; Easily go mouldy, poor storage stability; Former paste rheological property is close to Newtonian fluid, and when consumption is few, because mill base viscosity is compared with little and easily produce the phenomenon such as spillage, imbibition, when consumption is many, because its structural viscosity is little, the phenomenons such as net, open country are white are filled in easy generation.In recent years, the source of goods of sodium alginate starts anxiety, and price is soaring, causes stamp production cost to rise.Therefore, developing the new thickener that a kind of performance is good, price is low and substitute the thickener of sodium alginate as reactive printing, is dyeing urgent problem.
Xanthans (xanthan gum) is take carbohydrate as main raw material, through the widely used Microbial exopolysaccharides of one of Fermentation Engineering production by sarson Xanthomonas campestris.It is made up of " pentasaccharides repetitive " topology convergence body D-Glucose, D-MANNOSE, D-Glucose aldehydic acid, acetic acid and pyruvic acid, contains tertiary structure.In primary structure, main chain β-D glucose is connected by Isosorbide-5-Nitrae-glucoside key, and one in every two glucose residue rings is connecting a side chain, and side chain is by two mannoses and a trisaccharide group that glucuronic acid is alternately formed by connecting.Its mean molecule quantity is 2 × 10
6～5 × 10
7between, in the aqueous solution, present polyanion, there is unique physicochemical property, integrate thickening, emulsification, the function such as stable.Xanthans side chain contains more hydrogen bond, intermolecular force is strong, form multi-spiral body network structure, have good thickening properties, under low concentration, have high viscosity, shear shinning characteristic is remarkable, and on strand, contain a large amount of carboxyls, do not react with the active group of dyestuff, there is good acid and alkali resistance, salt-stable, therefore can be applied in printing with reactive dye.But in rarer aqueous solution, present typical chrysanthemum shape state of aggregation, make its certain density aqueous solution occur the phenomenon of weak gel, cause thickener system buoyancy effect stronger, thereby cause net poor-performing, easily occur that tinctorial yield is not high, color and luster is inhomogeneous, show money or valuables one carries unintentionally, decorative pattern lacks through stamp defects such as staplings.
The rheological property that changes xanthans, common degradable method realizes, and has bioanalysis (enzymolysis), Physical (heating, ultrasonic wave etc.) and chemical method (acid, alkali, oxidant etc.).Bioanalysis degradation conditions gentleness, selectively relatively better, but need special enzyme, price is more expensive; Physical degraded equipment is limited, and process is reacted with Branching and cross-linking; Chemical method biodegrading process is simple, but it is random to degrade, and produces with structural change and accessory substance.Through considering, select chemical method to degrade to xanthans.Experiment find, with acid with hydrogen peroxide processing compare, alkali treatment is carried out chemical modification to xanthans, can slough the acetyl group in strand, changes its rheological property, thereby obtains good printing quality.At present, modification xanthans is prepared in relevant alkali treatment, and for the research of textile printing, there is not yet report both at home and abroad.
Technical problem to be solved by this invention is to provide a kind of alkali modification xanthans and is applied to the method for textile printing, the method favorable reproducibility, and treatment facility requires low, and method is simple and convenient, is beneficial to suitability for industrialized production.The buoyancy effect of alkali modification xanthans thickener system has obtained weakening, show more viscous behavior, being conducive to thickener transfers on fabric through mesh, improve the saturating net performance of thickener, surface tinctorial yield, permeability and the color and luster uniformity, and can print fine decorative pattern, in producing, stamp has broad application prospects.
Summary of the invention
The object of the invention is, by a kind of alkali treatment method, xanthans is carried out to chemical modification, its rheological property is changed, improve the saturating net performance of thickener, to obtain good printing quality.
Technical problem to be solved by this invention is to provide a kind of alkali modification xanthans and is applied to the method for textile printing, comprising:
(1) by the vacuumize of xanthans powder to constant weight;
(2) xanthans is mixed with to the aqueous solution that concentration is 0.007～0.015mol/L, stirs 20～40 minutes at 60～100 ℃;
(3) under stirring condition, dropwise add sodium hydrate aqueous solution, the mol ratio of xanthans constitutional repeating unit and NaOH is 1:0.1～1.2, reacts 3～5 hours, obtains alkali modification xanthan gum solution;
(4) by the repeated multiple times precipitation of acetone for alkali modification xanthan gum solution, washing, dries to constant weight, is crushed to powder, obtains alkali modification xanthans;
(5), by soluble in water alkali modification xanthans, accurately prepare the alkali modification xanthan gum solution of 0.1～0.4g/L, the inherent viscosity of test thickener; The alkali modification xanthan collagen of preparation mass fraction 3% is stuck with paste, the apparent viscosity of testing former paste;
(6) adopt alkali modification xanthans to carry out dye printing, at fabric face impressing pattern, test printing performance.
Xanthans in described step (1) obtains through fermentation, and its mean molecule quantity is 2 × 10
6～5 × 10
7between.
Stir speed (S.S.) in described step (3) is 500～800r/min.
Modification xanthan gum solution in described step (4) and the volume ratio 1:1.5～1:2.5 of acetone.
Bake out temperature in described step (4) is 50～80 ℃.
Thickener inherent viscosity test condition in described step (5) is the Ubbelohde viscometer of capillary diameter 0.5～0.6mm, 35 ℃; Thickener apparent viscosity test condition is No. 4 rotors of rotation viscometer, 30r/min, 25 ℃.
The inherent viscosity of the alkali modification xanthans in described step (5) is 0.500～3.000L/g.
Dyestuff in described step (6) is REACTIVE DYES or DISPERSE DYES.
Printing condition in described step (6) is bar magnet 5～30mm, the speed of a motor vehicle 1～100m/min, magnetic force 1～12#, mesh 40～280 orders.
Impressing pattern in described step (6) is square pattern and wedge shaped pattern.
Compared with unmodified xanthans, the apparent viscosity of equal in quality mark 3% former paste can reduce by 40～85%.The saturating net amount of alkali modification xanthans mill base can improve 35%～65%, and surperficial tinctorial yield can improve 30%～65%, and permeability can improve 5%～60%.With respect to 1mol xanthans constitutional repeating unit, sodium hydroxide concentration is in 0.7～1.2mol, and the modification xanthans obtaining has best printing performance.
beneficial effect
The present invention carries out chemical modification by alkali treatment to xanthans, the method favorable reproducibility, and treatment facility requires low, and method is simple and convenient, is beneficial to suitability for industrialized production; The buoyancy effect of alkali modification xanthans thickener system has obtained weakening, show more viscous behavior, being conducive to thickener transfers on fabric through mesh, improve the saturating net performance of thickener, surface tinctorial yield, permeability and the color and luster uniformity, and can print fine decorative pattern, in producing, stamp has broad application prospects.
The specific embodiment
Below in conjunction with specific embodiment, further set forth the present invention.Should be understood that these embodiment are only not used in and limit the scope of the invention for the present invention is described.After having read the content of the present invention's instruction, those skilled in the art can make various changes or modifications the present invention, and these equivalent form of values fall within the application's appended claims limited range equally.
Embodiment 1
(1) xanthans powder is put into vacuum drying oven and be dried 8 hours to constant weight in 60 ℃;
(2) the xanthan gum solution 1000mL that compound concentration is 0.01mol/L in there-necked flask, puts it in thermostat water bath, uses electric mixer to stir 30 minutes in 90 ℃.
(3) regulate agitator speed 600r/min, dropwise add while stirring 3.50mL0.9814mol/L sodium hydroxide solution, react 4 hours, obtain modification xanthan gum solution.
(4), by modification repeated multiple times precipitation of acetone (the volume ratio 1:2 of modification xanthan gum solution and acetone) for xanthan gum solution, washing is dried to constant weight at 60 ℃, is crushed to powder.
(5), with the Ubbelohde viscometer of capillary diameter 0.5～0.6mm, measure sodium alginate (SA), the inherent viscosity of xanthans (XG) and alkali modification xanthans (MXG) thickener at 35 ℃.The former paste of quality measurement mark 3% is at No. 4 rotors of rotation viscometer, 30r/min, the apparent viscosity at 25 ℃.
(6) at bar magnet 8mm, speed of a motor vehicle 6m/min, pressure magnetic force 3
#, under the printing condition of 180 order plain nets, carry out cotton fabric by utilizing reactive dye stamp, print 10 × 10cm
2square pattern and long 100mm, wide 2mm wedge shaped pattern.Mill base prescription: the red P-4B of the refined lattice element of 1%K type, 5% urea, 1% reservehao S, 1% sodium bicarbonate, 70% former paste.
Under these conditions, the inherent viscosity of SA, XG and MXG, apparent viscosity and the saturating net amount on cotton fabric by utilizing reactive dye stamp thereof, surperficial tinctorial yield, permeability, Dry Sack irregularity, pattern profile definition, pattern profile definition comprises colored type sharpness (on fabric on wedge length and screen cloth the ratio of wedge length) and fineness (on fabric, wedge shape half is high departs from the percentage of the high ratio with overall height of wedge shape half on screen cloth with the ratio of overall height).As shown in table 1.
The rheological property of table 1 sodium alginate, xanthans and alkali modification xanthans and
Printing performance in COTTON FABRIC
As can be seen from Table 1, alkali treatment is carried out after modification xanthans, and its inherent viscosity decreases, and apparent viscosity reduces by 48%.And the saturating net amount of modification xanthans improves 35%, and surperficial tinctorial yield improves 42%, and permeability improves 27%, can print the meticulous colored type of clear-cut.
Embodiment 2
(1) xanthans powder is put into vacuum drying oven and be dried 8 hours to constant weight in 60 ℃;
(2) the xanthan gum solution 1000mL that compound concentration is 0.01mol/L in there-necked flask, puts it in thermostat water bath, uses electric mixer to stir 30 minutes in 90 ℃.
(3) regulate agitator speed 600r/min, dropwise add while stirring 9.34mL0.9814mol/L sodium hydroxide solution, react 4 hours, obtain modification xanthan gum solution.
(4), by modification repeated multiple times precipitation of acetone (the volume ratio 1:2 of modification xanthan gum solution and acetone) for xanthan gum solution, washing is dried to constant weight at 60 ℃, is crushed to powder.
(5), with the Ubbelohde viscometer of capillary diameter 0.5～0.6mm, measure sodium alginate (SA), the inherent viscosity of xanthans (XG) and alkali modification xanthans (MXG) thickener at 35 ℃.The former paste of quality measurement mark 3% is at No. 4 rotors of rotation viscometer, 30r/min, the apparent viscosity at 25 ℃.
(6) at bar magnet 8mm, speed of a motor vehicle 6m/min, pressure magnetic force 3
#, under the printing condition of 180 order plain nets, carry out cotton fabric by utilizing reactive dye stamp, print 10 × 10cm
2square pattern and long 100mm, wide 2mm wedge shaped pattern.Mill base prescription: the red P-4B of the refined lattice element of 1%K type, 5% urea, 1% reservehao S, 1% sodium bicarbonate, 70% former paste (former paste mass fraction is 3%).
Under these conditions, the inherent viscosity of SA, XG and MXG, apparent viscosity and the saturating net amount on cotton fabric by utilizing reactive dye stamp thereof, surperficial tinctorial yield, permeability, Dry Sack irregularity, pattern profile definition, pattern profile definition comprises that colored type sharpness (on fabric on wedge length and screen cloth the ratio of wedge length) and fineness (on fabric, wedge shape half is high departs from the percentage of the high ratio with overall height of wedge shape half on screen cloth with the ratio of overall height) are as shown in table 2.
The rheological property of table 2 sodium alginate, xanthans and alkali modification xanthans and
Printing performance in COTTON FABRIC
As can be seen from Table 2, alkali treatment is carried out after modification xanthans, and its inherent viscosity decreases, and apparent viscosity reduces by 75%.And the saturating net amount of modification xanthans improves 49%, and surperficial tinctorial yield improves 54%, and permeability improves 58%, can print the meticulous colored type of clear-cut.
Embodiment 3
I. xanthans powder is put into vacuum drying oven and be dried 8 hours to constant weight in 60 ℃;
(2) (the 2 xanthan gum solution 1000mL that compound concentration is 0.01mol/L in there-necked flask, put it in thermostat water bath, use electric mixer to stir 30 minutes in 90 ℃.
(3) regulate agitator speed 600r/min, dropwise add while stirring 9.34mL0.9814mol/L sodium hydroxide solution, react 4 hours, obtain modification xanthan gum solution.
(4) modification repeated multiple times precipitation of acetone (the volume ratio 1:2 of modification xanthan gum solution and acetone) for xanthan gum solution, washing is dried to constant weight at 60 ℃, is crushed to powder.
(5), with the Ubbelohde viscometer of capillary diameter 0.5～0.6mm, measure sodium alginate (SA), the inherent viscosity of xanthans (XG) and alkali modification xanthans (MXG) thickener at 35 ℃.The former paste of quality measurement mark 3% is at No. 4 rotors of rotation viscometer, 30r/min, the apparent viscosity at 25 ℃.
(6) at bar magnet 8mm, speed of a motor vehicle 6m/min, pressure magnetic force 3
#, under the printing condition of 180 order plain nets, carry out cotton fabric by utilizing reactive dye stamp, print 10 × 10cm
2square pattern and long 100mm, wide 2mm wedge shaped pattern.Mill base prescription: black B 133%, 5% urea of the refined lattice element of 1%KN type, 1% reservehao S, 1% sodium bicarbonate, 70% former paste (former paste mass fraction is 3%).
Under these conditions, the inherent viscosity of SA, XG and MXG, apparent viscosity and the saturating net amount on cotton fabric by utilizing reactive dye stamp thereof, surperficial tinctorial yield, permeability, Dry Sack irregularity, pattern profile definition, pattern profile definition comprises that colored type sharpness (on fabric on wedge length and screen cloth the ratio of wedge length) and fineness (on fabric, wedge shape half is high departs from the percentage of the high ratio with overall height of wedge shape half on screen cloth with the ratio of overall height) are as shown in table 3.
The rheological property of table 3 sodium alginate, xanthans and alkali modification xanthans and
Printing performance in COTTON FABRIC
As can be seen from Table 3, alkali treatment is carried out after modification xanthans, and its inherent viscosity decreases, and apparent viscosity reduces by 75%.And the saturating net amount of modification xanthans improves 52%, and surperficial tinctorial yield improves 54%, and permeability improves 41%, can print the meticulous colored type of clear-cut.
Embodiment 4
(1) xanthans powder is put into vacuum drying oven and be dried 8 hours to constant weight in 60 ℃;
(2) the xanthan gum solution 1000mL that compound concentration is 0.01mol/L in there-necked flask, puts it in thermostat water bath, uses electric mixer to stir 30 minutes in 90 ℃.
(3) regulate agitator speed 600r/min, dropwise add while stirring 9.34mL0.9814mol/L sodium hydroxide solution, react 4 hours, obtain modification xanthan gum solution.
(4), by modification repeated multiple times precipitation of acetone (the volume ratio 1:2 of modification xanthan gum solution and acetone) for xanthan gum solution, washing is dried to constant weight at 60 ℃, is crushed to powder.
(5), with the Ubbelohde viscometer of capillary diameter 0.5～0.6mm, measure sodium alginate (SA), the inherent viscosity of xanthans (XG) and alkali modification xanthans (MXG) thickener at 35 ℃.The SA of quality measurement mark 3%, the former paste of XG and MXG is at No. 4 rotors of rotation viscometer, 30r/min, the apparent viscosity at 25 ℃.
(6) at bar magnet 8mm, speed of a motor vehicle 6m/min, pressure magnetic force 3
#, under the printing condition of 180 order plain nets, carry out polyester-cotton fabric dye printing, print 10 × 10cm
2square pattern and long 100mm, wide 2mm wedge shaped pattern.Mill base prescription: 1% DISPERSE DYES is red, the red P-4B of the refined lattice element of 1%K type, 5% urea, 1% reservehao S, 1% sodium bicarbonate, 70% former paste (former paste mass fraction is 3%).
Under these conditions, the inherent viscosity of SA, XG and MXG, apparent viscosity and the saturating net amount on polyester-cotton fabric dye printing thereof, surperficial tinctorial yield, permeability, Dry Sack irregularity, pattern profile definition, pattern profile definition comprises that colored type sharpness (on fabric on wedge length and screen cloth the ratio of wedge length) and fineness (on fabric, wedge shape half is high departs from the percentage of the high ratio with overall height of wedge shape half on screen cloth with the ratio of overall height) are as shown in table 4.
The rheological property of table 4 sodium alginate, xanthans and alkali modification xanthans and
Printing performance on polyester-cotton fabric
As can be seen from Table 4, alkali treatment is carried out after modification xanthans, and its inherent viscosity decreases, and apparent viscosity reduces by 75%.And the saturating net amount of modification xanthans improves 62%, and surperficial tinctorial yield improves 61%, and permeability improves 24%, can print the meticulous colored type of clear-cut.
Claims (10)
1. alkali modification xanthans is applied to a method for textile printing, comprising:
(1) by the vacuumize of xanthans powder to constant weight;
(2) xanthans is mixed with to the aqueous solution that concentration is 0.007～0.015mol/L, stirs 20～40 minutes at 60～100 ℃;
(3) under stirring condition, dropwise add sodium hydrate aqueous solution, the mol ratio of NaOH and xanthans constitutional repeating unit is 1:0.1～1.2, reacts 3～5 hours, obtains alkali modification xanthan gum solution;
(4) by the repeated multiple times precipitation of acetone for alkali modification xanthan gum solution, washing, dries to constant weight, is crushed to powder, obtains alkali modification xanthans;
(5), by soluble in water alkali modification xanthans, accurately prepare the alkali modification xanthan gum solution of 0.1～0.4g/L, the inherent viscosity of test thickener; The alkali modification xanthan collagen of preparation mass fraction 3% is stuck with paste, the apparent viscosity of testing former paste;
(6) adopt alkali modification xanthans to carry out dye printing, at fabric face impressing pattern, test printing performance.
2. a kind of alkali modification xanthans according to claim 1 is applied to the method for textile printing, it is characterized in that: the xanthans in described step (1) obtains through fermentation, and its mean molecule quantity is 2 × 10
6～5 × 10
7between.
3. a kind of alkali modification xanthans according to claim 1 is applied to the method for textile printing, it is characterized in that: the stir speed (S.S.) in described step (3) is 500～800r/min.
4. a kind of alkali modification xanthans according to claim 1 is applied to the method for textile printing, it is characterized in that: the alkali modification xanthan gum solution in described step (4) and the volume ratio of acetone are 1:1.5～1:2.5.
5. a kind of alkali modification xanthans according to claim 1 is applied to the method for textile printing, it is characterized in that: the bake out temperature in described step (4) is 50～80 ℃.
6. a kind of alkali modification xanthans according to claim 1 is applied to the method for textile printing, it is characterized in that: the thickener inherent viscosity test condition in described step (5) is the Ubbelohde viscometer of capillary diameter 0.5～0.6mm, 35 ℃; Former paste apparent viscosity test condition is No. 4 rotors of rotation viscometer, 30r/min, 25 ℃.
7. a kind of alkali modification xanthans according to claim 1 is applied to the method for textile printing, it is characterized in that: the inherent viscosity of the alkali modification xanthans in described step (5) is 0.500～3.000L/g.
8. a kind of alkali modification xanthans according to claim 1 is applied to the method for textile printing, it is characterized in that: the dyestuff in described step (6) is REACTIVE DYES or DISPERSE DYES.
9. a kind of alkali modification xanthans according to claim 1 is applied to the method for textile printing, it is characterized in that: the printing condition in described step (6) is bar magnet 5～30mm, the speed of a motor vehicle 1～100m/min, magnetic force 1～12#, mesh 40～280 orders.
10. a kind of alkali modification xanthans according to claim 1 is applied to the method for textile printing, it is characterized in that: the impressing pattern in described step (6) is square pattern and wedge shaped pattern.
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|---|---|---|---|
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