荧光性植物纤维的制备及其应用研究
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摘要
随着经济的发展,商品造假行为日趋猖獗,在食品、医药、饮料、烟酒领域,假包装常使人防不胜防,不仅造成严重的经济损失,还直接危及人们的健康和生命。因此大力发展防伪技术,积极采取防伪手段来打击和制止伪造行为,在当前经济飞速发展中意义重大。
本论文以植物纤维为原料,通过纤维的预改性处理,与荧光油溶液复合的方法,制备具有荧光性能的功能纤维。探讨了影响纤维改性处理的因素,通过对其吸附率、吸湿性、吸油率和保油率的测定,确定纤维改性处理的最佳工艺条件,并探讨了改性处理对纤维的结构和性能的变化;研究了不同影响因素在改性纤维与荧光油溶液复合过程中的影响程度,采用各种分析手段,对荧光纤维的结构与性能进行表征,并研究了荧光纤维在造纸中的应用性。主要研究结果如下:
1、研究了硅烷偶联剂浓度、浆浓、浸渍温度和时间、干燥温度和时间等对纤维改性处理的影响,通过实验确定了纤维改性处理的最佳工艺条件:硅烷偶联剂K浓度为2%,浆料浓度为1.5%,浸渍温度为60℃,浸渍时间为24h,鼓风干燥温度为100℃,干燥时间为3h。
2、对纤维改性前后的结构和性能进行分析,结果表明,硅烷偶联剂与纤维间形成Si-O-C键,在纤维表面包覆着一层柔软致密的有机硅薄膜,使改性后纤维的长度、粗度等表面形态发生变化的同时,降低了纤维的亲水性,增强了亲油性能,但是纤维的结晶结构并未改变。
3、改性纤维与荧光油溶液复合过程中,设计正交试验研究了不同影响因素的影响程度,以及不同原料和处理条件对荧光强度的影响。结果表明,荧光粉油液浓度对实验结果的影响最大,为主要因素,浆料浓度和反应时间的影响次之,反应温度的影响最小,几乎可以忽略;较之原纤维,改性纤维在冷冻干燥和鼓风干燥(100℃)制备的荧光纤维效果均更好。
4、研究了制备的荧光纤维的结构和性能,其FTIR和XPS分析显示,荧光纤维表面化学键和元素组成均发生了变化,这是由于呈小长方体状的荧光物质,密密麻麻的附着在纤维表面的沟壑、凹陷处。制备的荧光纤维,荧光强度高,荧光牢度好,在水中能很好的分散,在紫外光或激光下,能发出闪亮的红光,防伪性和抄造性能皆很好。
5、研究了荧光纤维的抄造性能,探讨了荧光纤维用量、助留剂用量、纸页定量等对荧光纤维在纸页中留着的影响,结果表明,纸页定量越低,荧光纤维的分布密度越大,在助留剂用量为0.10%-0.15%时,荧光纤维用量≤0.01%即可满足荧光纤维纸的防伪要求,而且制备的荧光纤维具有一定的可重复利用性。
With the development of economy, the products are forged seriously. In the fields of food, medicine, wine and tobacco, the counterfeit packages result in the economy loss and endanger people’s health. So it is necessary to develop the anti-counterfeit technology.
In this paper, functional fibers were made by pre-modification treatment on fiber, and then mixed with fluorescence oil. The factors that affected the modification of fiber were studied to determine the optimum process conditions via measuring rate of absorption, water absorbability, oil absorbability and oil-retention, at the meantime, the changes of fiber structure and properties, the effects of factors in the composite process between modified fiber and fluorescence oil were also studied. The structure and properties of fluorescence fiber, application of fluorescence fiber in pulp and papermaking were characterized by using various analytical tools. The major findings of this study are as follows:
1、The influences of K and fiber concentration, immersion time and tempreture, and drying time and tempreture on modification treatment were studied, and major findings are as follows: K concentration is 2%, fiber concentration is 1.5%, immersion time and tempreture is 24h and 60℃, drying time and tempreture is 3h and 100℃.
2、The structure and properties of fibers were studied. The results showed that Si-O-C bond was formed between silane coupling agents and fibers, a dense and soft plastic film covered the fiber, that changed surface morphology of fiber after treated, lowed fiber hydrophilicity and strengthened its lipophilic performance, but the crystal structure of fiber had no change.
3、The influence of different fibers and treat conditions on the fluorescence intensity, effects of factors in the composite process between modified fiber and fluorescence oil were studied by orthogonal experiment design. The results showed that fluorescence oil concentration had a significantest impact, and then fiber concentration, reaction time, reaction tempreture successively. Compared with raw fiber, fluorescence fibers, prepared with treated fiber by freeze drying and air drying, were all displayed a salutary effect.
4、The structure and properties of fluorescence fiber were studied. The FTIR and XPS results showed that bands and elemental composition had changed, accruing on the surface of fluorescence fiber, it is because of box-like fluorescence materials had thickly covered in canals and hollow of fluorescence fiber. Fibers prepared had high fluorescence intensity, good fluorescence fastness, and high quality dispersion in water. Meanwhile, anti-counterfeit and application properties of fibers prepared were pretty well, and they could glow with red light under UV light.
5、The application properties of fluorescence fiber were studied by ananlizing the influence of fluorescence fiber and retention agent content, and paper size on the retention of fiber. The result showed that the lower paper size, the more fiber prepared scattered in the paper. Paper could meet the anti-counterfeit and duplication of certain high utilization needs, when the retention agent content is 0.10%-0.15%, and fluorescence fiber content is lower than 0.01%.
本论文以植物纤维为原料,通过纤维的预改性处理,与荧光油溶液复合的方法,制备具有荧光性能的功能纤维。探讨了影响纤维改性处理的因素,通过对其吸附率、吸湿性、吸油率和保油率的测定,确定纤维改性处理的最佳工艺条件,并探讨了改性处理对纤维的结构和性能的变化;研究了不同影响因素在改性纤维与荧光油溶液复合过程中的影响程度,采用各种分析手段,对荧光纤维的结构与性能进行表征,并研究了荧光纤维在造纸中的应用性。主要研究结果如下:
1、研究了硅烷偶联剂浓度、浆浓、浸渍温度和时间、干燥温度和时间等对纤维改性处理的影响,通过实验确定了纤维改性处理的最佳工艺条件:硅烷偶联剂K浓度为2%,浆料浓度为1.5%,浸渍温度为60℃,浸渍时间为24h,鼓风干燥温度为100℃,干燥时间为3h。
2、对纤维改性前后的结构和性能进行分析,结果表明,硅烷偶联剂与纤维间形成Si-O-C键,在纤维表面包覆着一层柔软致密的有机硅薄膜,使改性后纤维的长度、粗度等表面形态发生变化的同时,降低了纤维的亲水性,增强了亲油性能,但是纤维的结晶结构并未改变。
3、改性纤维与荧光油溶液复合过程中,设计正交试验研究了不同影响因素的影响程度,以及不同原料和处理条件对荧光强度的影响。结果表明,荧光粉油液浓度对实验结果的影响最大,为主要因素,浆料浓度和反应时间的影响次之,反应温度的影响最小,几乎可以忽略;较之原纤维,改性纤维在冷冻干燥和鼓风干燥(100℃)制备的荧光纤维效果均更好。
4、研究了制备的荧光纤维的结构和性能,其FTIR和XPS分析显示,荧光纤维表面化学键和元素组成均发生了变化,这是由于呈小长方体状的荧光物质,密密麻麻的附着在纤维表面的沟壑、凹陷处。制备的荧光纤维,荧光强度高,荧光牢度好,在水中能很好的分散,在紫外光或激光下,能发出闪亮的红光,防伪性和抄造性能皆很好。
5、研究了荧光纤维的抄造性能,探讨了荧光纤维用量、助留剂用量、纸页定量等对荧光纤维在纸页中留着的影响,结果表明,纸页定量越低,荧光纤维的分布密度越大,在助留剂用量为0.10%-0.15%时,荧光纤维用量≤0.01%即可满足荧光纤维纸的防伪要求,而且制备的荧光纤维具有一定的可重复利用性。
With the development of economy, the products are forged seriously. In the fields of food, medicine, wine and tobacco, the counterfeit packages result in the economy loss and endanger people’s health. So it is necessary to develop the anti-counterfeit technology.
In this paper, functional fibers were made by pre-modification treatment on fiber, and then mixed with fluorescence oil. The factors that affected the modification of fiber were studied to determine the optimum process conditions via measuring rate of absorption, water absorbability, oil absorbability and oil-retention, at the meantime, the changes of fiber structure and properties, the effects of factors in the composite process between modified fiber and fluorescence oil were also studied. The structure and properties of fluorescence fiber, application of fluorescence fiber in pulp and papermaking were characterized by using various analytical tools. The major findings of this study are as follows:
1、The influences of K and fiber concentration, immersion time and tempreture, and drying time and tempreture on modification treatment were studied, and major findings are as follows: K concentration is 2%, fiber concentration is 1.5%, immersion time and tempreture is 24h and 60℃, drying time and tempreture is 3h and 100℃.
2、The structure and properties of fibers were studied. The results showed that Si-O-C bond was formed between silane coupling agents and fibers, a dense and soft plastic film covered the fiber, that changed surface morphology of fiber after treated, lowed fiber hydrophilicity and strengthened its lipophilic performance, but the crystal structure of fiber had no change.
3、The influence of different fibers and treat conditions on the fluorescence intensity, effects of factors in the composite process between modified fiber and fluorescence oil were studied by orthogonal experiment design. The results showed that fluorescence oil concentration had a significantest impact, and then fiber concentration, reaction time, reaction tempreture successively. Compared with raw fiber, fluorescence fibers, prepared with treated fiber by freeze drying and air drying, were all displayed a salutary effect.
4、The structure and properties of fluorescence fiber were studied. The FTIR and XPS results showed that bands and elemental composition had changed, accruing on the surface of fluorescence fiber, it is because of box-like fluorescence materials had thickly covered in canals and hollow of fluorescence fiber. Fibers prepared had high fluorescence intensity, good fluorescence fastness, and high quality dispersion in water. Meanwhile, anti-counterfeit and application properties of fibers prepared were pretty well, and they could glow with red light under UV light.
5、The application properties of fluorescence fiber were studied by ananlizing the influence of fluorescence fiber and retention agent content, and paper size on the retention of fiber. The result showed that the lower paper size, the more fiber prepared scattered in the paper. Paper could meet the anti-counterfeit and duplication of certain high utilization needs, when the retention agent content is 0.10%-0.15%, and fluorescence fiber content is lower than 0.01%.
引文
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