CN104122166A - Quantitative determination method for fiber content of viloft fiber and natural cellulose fiber blended textiles - Google Patents
Quantitative determination method for fiber content of viloft fiber and natural cellulose fiber blended textiles Download PDFInfo
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Abstract
A provided quantitative determination method for fiber content of viloft fiber and natural cellulose fiber blended textiles comprises the following steps: S1, putting viloft fiber and natural cellulose fiber blended textiles in a baking box to bake to dry, then cooling to room temperature, and weighing the mass of the blended textiles, wherein the natural cellulose is cotton, flax and ramie which are not subjected to chemical degradation; S2, putting the blended textiles in a formic acid-zinc chloride reagent with the formic acid mass fraction of 68% and the zinc chloride mass fraction of 20% according to the sample (g) to reagent (mL) bath ratio of 1:100-200, continuously shaking at 40-70 DEG C for 20-60 min; and S3, washing fiber indissolvable in the formic acid-zinc chloride reagent in the step S2 with water to neutral, putting in a constant-temperature baking box to bake to dry, rapidly taking out and cooling to room temperature, and weighing the residual mass of the blended textiles. A detection result is highly consistent with an actual value, and the method has extremely high accuracy.
Description
Technical field
The present invention relates to a kind of quantitative test detection method of textile fiber content, relate in particular to the detection method of a kind of viloft of containing fiber and native cellulose blending product.
Background technology
Viloft fiber, the common translated name Wei Lefute fiber of Chinese or vilofty fiber, it is another New Regenerated Cellulosic Fibers that Britain Acordis company produces after Tencel fiber, it is by manually extracting raw material from special through the high-quality timber of biological breeding, with solvent method, produce gained, belong to pure natural, high-grade environmental protection, pollution-free, biodegradable fiber.Can be to environment in viloft fiber production process, the auxiliary material that production run is used, auxiliary agent are all nontoxic, and most of auxiliary agent and semi-manufacture fiber all recyclable, be a kind of novel environmental protection fiber.Because viloft fiber source is in natural material, some premium properties with native cellulose fibre, in addition unique fiber surface structural form, make fabric lining there is splendid permeability and moisture absorbing and sweat releasing performance, the garment material of its weaving is soft, wear slim and graceful, warmingly, washing is arranged conveniently, is subject to very much the welcome of consumption market.
Native cellulose fibre is common cotton, kapok, flax, ramie, jute, sisal hemp etc., and its chief component material is cellulose, also has pectin, hemicellulose, lignin, adipocere matter, the hydrotrope, ash to grade.Native cellulose fibre depends primarily on the growth site of fiber in plant and their structures own in the difference aspect chemical composition and physical property, according to the difference at fiber growth position, native cellulose fibre is divided into seed fiber, bast fiber, leaf fibre and the large class of microtubule fasolculus fiber four.
Cotton fiber belongs to seed fiber, and chief component is cellulose, hemicellulose, soluble saccharide, wax, fat, the ash material that grades, and color cotton also contains pigment.The dyeability of cotton fiber is better, can adopt the dyeing such as direct dyes, reducing dye, reactive dye, basic-dyeable fibre, sulfur dye, cotton fiber also has good hydroscopicity, but under moist environment, cotton textiles are easily subject to the erosion of bacterium and mould and go mouldy, and the bafta after going mouldy is powerful obviously to decline, and is difficult in addition the look mark of removing.
Flax belongs to bast fiber, and it has good intensity and larger rigidity, and moisture absorption performance is good, and bacterium is had to certain inhibiting effect.The people in period of ancient Egypt make mummy with linen parcel corpse, and during World War II, people shred boiling by linen, with cooking liquor, replace disinfectant to irrigate to the wounded.Linen can reach 94% to the sterilizing rate of Staphylococcus aureus, and Escherichia coli sterilizing rate is reached to 92%.
Ramee also belongs to bast fiber, and it is to be formed by unicellular growth, and fiber is elongated, and two sections of sealings, have cell, and cell wall thickness is relevant with numb kind and degree of ripeness.Longitudinal outward appearance of ramee is cylindrical shape or pancake, does not turn bent, and it is smooth that fiber outside surface has, and what have has obvious striped, a blunt circle of head end of fiber; Xsect is oval, and has ellipse or oval shape lumen, and cell wall even thickness, has rayed split.The intensity of ramie is the highest in natural fiber, and fiber is stiffening, and rigidity is large, has higher initial modulus, stronger gloss, have extraordinary moisture absorption, moisture releasing performance, but the wrinkle resistance of ramie fabric and wearing quality is poor.
Single textile is when possessing certain superiority, often also there are a lot of defects, for example the wrinkle resistance of ramie and wearing quality are poor, these defects can be by making up improvement with other fiber blends, and blending product is favored by consumer more and more because it has the advantage of two or more fibers concurrently, so-called blending product refers to bi-component or the multicomponent fibre textile being processed by mixed fibre, blending, interweave etc. by two or more fibrous materials.It can overcome the weakness of Single Fiber material self, fully gathers the advantage of multiple fiber, has greatly improved the functional of textile.
In quality inspection field, fiber content quantitative test for blending product adopts chemical dissolution method conventionally, so-called chemical dissolution method is exactly a component will selecting in certain agent dissolves blending product, then calculate the content of other component, but chemical dissolution method also has many weak points, such as, solubilising reagent and temperature of reaction all directly have influence on the accuracy of measurement result and the efficiency of surveying work, the chemical dissolution method that quality inspection unit adopts now needs 1～2.5 hour conventionally, and detection efficiency is low.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of method of simple and efficient detection viloft fiber and native cellulose blending product fiber content, fills up the blank of domestic this product inspection method.
In order to solve the problems of the technologies described above, the present invention adopts following technical characterictic:
Viloft fiber and a native cellulose fibre blending product fiber content quantitative detecting method, is characterized in that comprising the following steps:
1) viloft fiber and native cellulose blending product are placed in after the constant temperature oven of 102～108 ℃ is dried, take out rapidly and are placed in exsiccator and are cooled to room temperature, take the quality m of blending product
0, described native cellulose fibre is cotton fiber, flax fiber and the ramee that does not pass through chemical degradation;
2) according to sample (g): the bath raio of reagent (mL)=1:100～200 is placed in formic acid-solder(ing)acid by blending product, under 40～70 ℃ of conditions, shake 20～60 minutes continuously, in described formic acid-solder(ing)acid, the mass fraction of formic acid is 68%, and the mass fraction of zinc chloride is 20%;
3) by step 2) in be insoluble to formic acid-zinc chloride reagent fiber water clean to neutral, the constant temperature oven that is then placed in 102～108 ℃ is dried, and takes out to be rapidly placed in exsiccator and to be cooled to room temperature, takes the residual mass m of blending product
1.
The solubilising reagent that the method is selected and solution temperature can be accelerated viloft Fibrinolysis under the condition of concussion continuously, have greatly reduced detection time, have improved detection efficiency.
As preferred version, step 2) described in solution temperature be preferably 50～65 ℃, be preferably 60 ℃, dissolution time is preferably 30～50 minutes.Under this temperature or this dissolution time, native cellulose damage after formic acid-zinc chloride is processed is less, and now viloft fiber can dissolve completely, makes final testing result and actual numerical value can keep highly consistent.
Further, step 2) bath raio of described blending product and reagent can be preferably 1:150～180, when the amount of solubilising reagent (mL) is too small, dissolving fiber in blending product can not get abundant dissolving, make testing result out of true, when the consumption of solubilising reagent is too much, although can make blending product fully dissolve, but can cause undoubtedly the waste of reagent, increase testing cost, when the bath raio of control blending product and reagent is 1:150 to 180, can either make blending product fully dissolve, can save again the consumption of solubilising reagent.
The present invention is on the basis of further investigation, formic acid-zinc chloride is as solubilising reagent, and solution temperature is controlled between 40～70 ℃, because the damage after formic acid-zinc chloride is processed of native cellulose at this temperature is less, and under this test condition, viloft fiber can dissolve completely, make final testing result and actual numerical value can keep highly consistent, there is very high accuracy.In addition, solubilising reagent of the present invention and solution temperature have also been reduced detection time greatly, make only need 20 minutes the shortest detection time, have improved detection efficiency.
Embodiment
Below in conjunction with specific embodiment, the present invention is described in further details.
Embodiment 1 native cellulose correction factor test
Get the native cellulose fibre of certain mass, be placed in the constant temperature oven of 105 ℃ 3 hours, after fully drying, take out rapidly and be placed in exsiccator and be cooled to room temperature, with the balance that degree of accuracy is 0.1mg, take the weight of native cellulose fibre, be designated as a, according to sample (g): the bath raio of reagent (mL)=1:100 is placed in formic acid-liquor zinci chloridi (formic acid-liquor zinci chloridi adds water to 100g by 20g anhydrous zinc chloride and 68g anhydrous formic acid and makes) by native cellulose fibre, under 40～70 ℃ of conditions, shake continuously after 30min, native cellulose fibre water is cleaned to neutral, the constant temperature oven that is placed in 105 ℃ is dried, then taking-up is placed in exsiccator and is cooled to room temperature rapidly, with the balance that degree of accuracy is 0.1mg, take weight b.Relatively the size of a and b just can show that native cellulose fibre, in the mass loss situation with after formic acid-zinc chloride agent treated, represents the modified weight modulus of native cellulose fibre after formic acid-zinc chloride agent treated with d=a/b.
As shown in table 1, in solution temperature, be within the scope of 40～70 ℃, the correction factor of native cellulose fibre is along with the rising of temperature, and correction factor d remains between 1.00～1.03, and reappearance is good.
Table 1 native cellulose fibre correction factor test figure
Embodiment 2viloft Fibrinolysis performance test
Get the viloft fiber of certain mass, be placed in the constant temperature oven of 105 ℃ 3 hours, after fully drying, take out rapidly and be placed in exsiccator and be cooled to room temperature, with the balance that degree of accuracy is 0.1mg, take the weight of fiber, according to sample (g): reagent (mL)=1:100 bath raio is placed in formic acid-liquor zinci chloridi (formic acid-liquor zinci chloridi adds water to 100g by 20g anhydrous zinc chloride and 68g anhydrous formic acid and makes) by viloft fiber, under 40～70 ℃ of conditions, shake continuously after different time, observe the dissolving situation of viloft fiber.As can be seen from Table 2, when needing 30 minutes ability under 60 ℃ of conditions, viloft fiber dissolves completely; When temperature is during higher than 70 ℃ of conditions, only need just can dissolve completely for 20 minutes.
Table 2viloft Fibrinolysis performance test
The solubility test of cotton blending product during 360 ℃ of embodiment
Get viloft fiber and the cotton blending product of a certain amount of its component concentration of the unknown, be placed in the constant temperature oven of 105 ℃ 3 hours, after fully drying, take out rapidly and be placed in exsiccator and be cooled to room temperature, the weight that takes blending product with the balance that degree of accuracy is 0.1mg, is designated as m
0according to sample (g): reagent (mL)=1:100 bath raio is placed in formic acid-liquor zinci chloridi (formic acid-liquor zinci chloridi adds water to 100g by 20g anhydrous zinc chloride and 68g anhydrous formic acid and makes) by blending product, under 60 ℃ of conditions, shake continuously after 30min, viloft fiber is dissolved in formic acid-liquor zinci chloridi completely, by insoluble fiber, be that cotton water cleans to neutral, the constant temperature oven that is placed in 105 ℃ is dried, then taking-up is placed in exsiccator and is cooled to room temperature rapidly, with the balance that degree of accuracy is 0.1mg, takes weight m
1.Wherein, in blending product, cotton quality is m
1, the quality of viloft fiber is m
0-m
1.
Through computational reasoning, according to computing formula (1), (2), can further determine viloft fiber and cotton percentage composition in blending product.
P
2=100-P
1…………………………………………………(2)
In formula: P
1the clean dry percent content of native cellulose fibre, % are not dissolved in-expression;
P
2the clean dry percent content of fiber v iloft fiber, % are dissolved in-expression;
The modified weight modulus of native cellulose fibre after agent treated do not dissolved in d-expression.
The setting of correction factor d is in order to make testing result more accurate, avoids insoluble fiber when carrying out agent treated, to occur damage and causes final detection result to depart from actual value.As described in Example 1, when solution temperature is 60 ℃, correction factor d is 1.02, has guaranteed the accuracy that this enforcement is measured, as shown in table 3.
The solubility test data of cotton blending product during table 360 ℃
| m 0 | m 1 | d | P 1 | P 2 |
| 1.0723 | 0.7506 | 1.02 | 71.4 | 28.6 |
| 1.1084 | 0.7814 | 1.02 | 71.9 | 28.1 |
The solubility test of cotton blending product during 470 ℃ of embodiment
Get viloft fiber and the cotton blending product of a certain amount of its component concentration of the unknown, be placed in the constant temperature oven of 105 ℃ 3 hours, after fully drying, take out rapidly and be placed in exsiccator and be cooled to room temperature, the weight that takes blending product with the balance that degree of accuracy is 0.1mg, is designated as m
0according to sample (g): reagent (mL)=1:150 bath raio is placed in formic acid-liquor zinci chloridi (formic acid-liquor zinci chloridi adds water to 100g by 20g anhydrous zinc chloride and 68g anhydrous formic acid and makes) by blending product, under 70 ℃ of conditions, shake continuously after 20min, viloft fiber is dissolved in formic acid-liquor zinci chloridi completely, by insoluble fiber, be that cotton water cleans to neutral, the constant temperature oven that is placed in 105 ℃ is dried, then taking-up is placed in exsiccator and is cooled to room temperature rapidly, with the balance that degree of accuracy is 0.1mg, takes weight m
1.Wherein, in blending product, cotton quality is m
1, the quality of viloft fiber is m
0-m
1.
According to computing formula (1), (2) described in embodiment 3, draw viloft fiber and cotton percentage composition in blending product, in Table 4.
The solubility test data of cotton blending product during table 470 ℃
| m 0 | m 1 | d | P 1 | P 2 |
| 1.0413 | 0.7198 | 1.03 | 71.2 | 28.8 |
| 1.1008 | 0.7641 | 1.03 | 71.5 | 28.5 |
The solubility test of flax blending product during 540 ℃ of embodiment
Get viloft fiber and flax blending product of a certain amount of its component concentration of the unknown, be placed in the constant temperature oven of 105 ℃ 3 hours, after fully drying, take out rapidly and be placed in exsiccator and be cooled to room temperature, the weight that takes blending product with the balance that degree of accuracy is 0.1mg, is designated as m
0according to sample (g): reagent (mL)=1:180 bath raio is placed in formic acid-liquor zinci chloridi (formic acid-liquor zinci chloridi adds water to 100g by 20g anhydrous zinc chloride and 68g anhydrous formic acid and makes) by blending product, under 40 ℃ of conditions, shake continuously after 60min, viloft fiber is dissolved in formic acid-liquor zinci chloridi completely, by insoluble fiber, be that flax water cleans to neutral, the constant temperature oven that is placed in 105 ℃ is dried, then taking-up is placed in exsiccator and is cooled to room temperature rapidly, with the balance that degree of accuracy is 0.1mg, takes weight m
1.Wherein, in blending product, the quality of flax is m
1, the quality of viloft fiber is m
0-m
1.
According to computing formula (1), (2) described in embodiment 3, draw the percentage composition of viloft fiber and flax in blending product, in Table 5.
The solubility test data of flax blending product during table 540 ℃
| m 0 | m 1 | d | P 1 | P 2 |
| 1.1107 | 0.6709 | 1.00 | 60.4 | 39.6 |
| 1.1039 | 0.6601 | 1.00 | 59.8 | 40.2 |
The solubility test of flax blending product during 665 ℃ of embodiment
Get viloft fiber and flax blending product of a certain amount of its component concentration of the unknown, be placed in the constant temperature oven of 105 ℃ 3 hours, after fully drying, take out rapidly and be placed in exsiccator and be cooled to room temperature, the weight that takes blending product with the balance that degree of accuracy is 0.1mg, is designated as m
0according to sample (g): reagent (mL)=1:200 bath raio is placed in formic acid-liquor zinci chloridi (formic acid-liquor zinci chloridi adds water to 100g by 20g anhydrous zinc chloride and 68g anhydrous formic acid and makes) by blending product, under 65 ℃ of conditions, shake continuously after 40min, viloft fiber is dissolved in formic acid-liquor zinci chloridi completely, by insoluble fiber, be that flax water cleans to neutral, the constant temperature oven that is placed in 105 ℃ is dried, then taking-up is placed in exsiccator and is cooled to room temperature rapidly, with the balance that degree of accuracy is 0.1mg, takes weight m
1.Wherein, in blending product, the quality of flax is m
1, the quality of viloft fiber is m
0-m
1.
According to computing formula (1), (2) described in embodiment 3, draw the percentage composition of viloft fiber and flax in blending product, in Table 6.
The solubility test data of flax blending product during table 665 ℃
| m 0 | m 1 | d | P 1 | P 2 |
| 1.0681 | 0.6346 | 1.02 | 60.6 | 39.4 |
| 1.0680 | 0.6293 | 1.02 | 60.1 | 39.9 |
The solubility test of ramie blending product during 750 ℃ of embodiment
Get viloft fiber and the ramie blending product of a certain amount of its component concentration of the unknown, be placed in the constant temperature oven of 105 ℃ 3 hours, after fully drying, take out rapidly and be placed in exsiccator and be cooled to room temperature, the weight that takes blending product with the balance that degree of accuracy is 0.1mg, is designated as m
0according to sample (g): reagent (mL)=1:100 bath raio is placed in formic acid-liquor zinci chloridi (formic acid-liquor zinci chloridi adds water to 100g by 20g anhydrous zinc chloride and 68g anhydrous formic acid and makes) by blending product, under 50 ℃ of conditions, shake continuously after 50min, viloft fiber is dissolved in formic acid-liquor zinci chloridi completely, by insoluble fiber, be that ramie water cleans to neutral, the constant temperature oven that is placed in 105 ℃ is dried, then taking-up is placed in exsiccator and is cooled to room temperature rapidly, with the balance that degree of accuracy is 0.1mg, takes weight m
1.Wherein, in blending product, the quality of ramie is m
1, the quality of viloft fiber is m
0-m
1.
According to computing formula (1), (2) described in embodiment 3, draw the percentage composition of viloft fiber and ramie in blending product, in Table 7.
The solubility test data of ramie blending product during table 750 ℃
| m 0 | m 1 | d | P 1 | P 2 |
| 1.0122 | 0.5132 | 1.00 | 50.7 | 49.3 |
| 1.1333 | 0.5667 | 1.00 | 50.0 | 50.0 |
The solubility test of ramie blending product during 870 ℃ of embodiment
Get viloft fiber and the ramie blending product of a certain amount of its component concentration of the unknown, be placed in the constant temperature oven of 105 ℃ 3 hours, after fully drying, take out rapidly and be placed in exsiccator and be cooled to room temperature, the weight that takes blending product with the balance that degree of accuracy is 0.1mg, is designated as m
0according to sample (g): reagent (mL)=1:100 bath raio is placed in formic acid-liquor zinci chloridi (formic acid-liquor zinci chloridi adds water to 100g by 20g anhydrous zinc chloride and 68g anhydrous formic acid and makes) by blending product, under 70 ℃ of conditions, shake continuously after 20min, viloft fiber is dissolved in formic acid-liquor zinci chloridi completely, by insoluble fiber, be that ramie water cleans to neutral, the constant temperature oven that is placed in 105 ℃ is dried, then taking-up is placed in exsiccator and is cooled to room temperature rapidly, with the balance that degree of accuracy is 0.1mg, takes weight m
1.Wherein, in blending product, the quality of ramie is m
1, the quality of viloft fiber is m
0-m
1.
According to computing formula (1), (2) described in embodiment 3, draw the percentage composition of viloft fiber and ramie in blending product, in Table 8.
The solubility test data of ramie blending product during table 870 ℃
| m 0 | m 1 | d | P 1 | P 2 |
| 1.0662 | 0.5247 | 1.02 | 50.2 | 49.8 |
| 1.1392 | 0.5551 | 1.02 | 49.7 | 50.3 |
Claims (5)
1. viloft fiber and a native cellulose fibre blending product fiber content quantitative detecting method, is characterized in that comprising the following steps:
1) viloft fiber and native cellulose fibre blending product are placed in after the constant temperature oven of 102～108 ℃ is dried, take out rapidly and are placed in exsiccator and are cooled to room temperature, take the quality m of blending product
0, described native cellulose is cotton fiber, flax fiber and the ramee that does not pass through chemical degradation;
2) according to sample (g): the bath raio of reagent (mL)=1:100～200 is placed in formic acid-solder(ing)acid by blending product, under 40～70 ℃ of conditions, shake 20～60 minutes continuously, in described formic acid-solder(ing)acid, the mass fraction of formic acid is 68%, and the mass fraction of zinc chloride is 20%;
3) by step 2) in be insoluble to formic acid-solder(ing)acid fiber water clean to neutral, the constant temperature oven that is then placed in 102～108 ℃ is dried, and takes out to be rapidly placed in exsiccator and to be cooled to room temperature, takes the residual mass m of blending product
1.
2. viloft fiber according to claim 1 and native cellulose fibre blending product fiber content quantitative detecting method, is characterized in that step 2) described solution temperature is 50～65 ℃.
3. viloft fiber according to claim 2 and native cellulose fibre blending product fiber content quantitative detecting method, is characterized in that step 2) described solution temperature is 60 ℃.
4. viloft fiber according to claim 2 and native cellulose fibre blending product fiber content quantitative detecting method, is characterized in that step 2) the described concussion time is 30～50 minutes.
5. viloft fiber according to claim 1 and native cellulose fibre blending product fiber content quantitative detecting method, is characterized in that, blending product (g) is 1:150～180 with the bath raio of reagent (mL) described in step S2.
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| CN107024407A (en) * | 2017-05-04 | 2017-08-08 | 绍兴文理学院元培学院 | A kind of bicomponent fabric component ratio method of testing |
| CN107063917A (en) * | 2017-06-29 | 2017-08-18 | 莱茵技术-商检（青岛）有限公司 | A kind of method for determining cellulose fiber content in the natural or two-component mixture of regenerated celulose fibre and polyester fiber |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105043916A (en) * | 2015-06-23 | 2015-11-11 | 天纺标（天津）检测科技有限公司 | Quantifying method for milk protein modified PAN fiber and cellulose fiber blended product |
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| CN107024407A (en) * | 2017-05-04 | 2017-08-08 | 绍兴文理学院元培学院 | A kind of bicomponent fabric component ratio method of testing |
| CN107024407B (en) * | 2017-05-04 | 2019-05-07 | 绍兴文理学院元培学院 | A kind of bicomponent fabric component ratio test method |
| CN107063917A (en) * | 2017-06-29 | 2017-08-18 | 莱茵技术-商检（青岛）有限公司 | A kind of method for determining cellulose fiber content in the natural or two-component mixture of regenerated celulose fibre and polyester fiber |
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Application publication date: 20141029 |