Causticization and Anticrease finish in Continuous Process

รายงานการวิจัย--มหาวิทยาลัยเทคโนโลยีราชมงคลพระนคร, 2553The adsorption of cotton fabric is improved by treatment with sodium hydroxide, which is called causticization method. In the method, it is necessary to wash off unreacted sodium hydroxide from the fabric and then neutralize with some acids, such as acetic acid and sulphuric acid. In this research, citric acid was used to neutralize causticized fabric and anticrease finish on cotton fabric. The citric acid is non-formaldehyde anticrease finishing agent. So that the two processes, i.e. causticization and anticrease finish, could be combined into one continuous process. And it was found that the causticization would improve some properties of anticrease fabric with citric acid. From the result, it showed that the anticrease fabric had lower tensile strength than untreated fabric. The anticrease finish with 6% w/v citric acid had higher tensile strength than 8 and 10 % w/v, respectively. When concentration of acid, curing temperature and time were higher, wrinkle recovery angle would be increased. The effect of catalyst showed that anticrease finish using sodium hypophosphite as catalyst was higher wrinkle recovery angle and tensile strength than non-catalyst finish. The causticization before anticrease finish would increase tensile strength and whiteness of fabric when compared to only anticrease finish. The effect of catalyst showed that at low acid concentration, increasing of catalyst didn’t have effect on tensile strength and wrinkle recovery angle value. At higher acid concentration, trend of tensile strength was decreased whereas wrinkle recovery angle increased and slightly effect on whiteness.Rajamangala University of Technology Phra Nakho

การออกแบบและพัฒนาผลิตภัณฑ์เคหะสิ่งทอจากเศษผ้าเหลือใช้ด้วย เทคนิคการใช้เครื่องยิงพรม (Hand Tufted) สาหรับกลุ่มวิสาหกิจชุมชนบ้านเคียนงาม จังหวัดนครนายก

รายงานวิจัย -- มหาวิทยาลัยเทคโนโลยีราชมงคลพระนคร, 2557The purposes of this research Design and development from remnant fabrics by for Bann Ta Kien Ngam Community enterprises, Nakhon Na yok province to study the technique and procedure of applying and designing from fabric knit in textile products . Therefore, the researcher realize that the remnant fabrics which is unused in garment and apparel manufacturing process to be reused by transform to increase the value of products such as Textile home furnish to decorate the living room which is designed by hand Tufted machine and develop to be products and product design is nature design style. The processes can be divided into three parts which are surveying information, creating the prototype and analyzing the products from fabric knit. The information are collected by using the questionnaire from the sample group to study about the general information and the opinion from the sample group for applying remnant fabric knit and transform to be the new products that are summarized that the using of remnant fabric to create the textile home furnish products for decorate the living room’s decoration is 49 percent. Thus, the researcher choose the products that are appropriate with remnant fabric quality such as carpet, cushions and backrest pillows And the second process is creating the prototype by using the technique of hand Tufted machine to create the designs for each product. Then, the research survey the opinion of the sample group to for prototype. It can be summarize that the beautiful interesting design is 66 percent, the beautiful and appropriate design is 56 percent, the appropriate color using is 52 percent and the utility of the product is 60 percent.Rajamangala University of Technology Phra Nakho

การพัฒนาการเตรียมสีผงจากสีย้อมธรรมชาติ

รายงานวิจัย -- มหาวิทยาลัยเทคโนโลยีราชมงคลพระนคร, 2557The objective of this research is to preparation of dye powder from natural dyes. The conditions of preparation of dye powder and properties of natural dye powder were studied. The natural dyes were used in this research containing of Lac, Ebony heart wood, Sappan heart wood, Turmeric and dried Butterfly pea. The natural dyes powder were prepared by three methods; oven drying, salt adsorption and salting out. The natural dyes powder were dyed on silk fabric and then characterized by colour strength (K/S), washing fastness and light fastness. The results showed that the dye powder from dried Butterfly pea could not be prepared by dye powder preparation used in this research because of the dye power was not stable. The dyes powder from Lac, Ebony heart wood, Sappan heart wood and Turmeric were prepared by all three methods. The oven drying and salting out methods showed higher K/S than salt adsorption method. And the K/S of dyes powder from oven drying and salting out methods were not significant. In the oven drying method showed good K/S on silk fabric dyed from the turmeric dye powder. And salting out method showed good K/S on silk fabrics dyed from Lac, Ebony heart wood and Sappan heart wood dyes powder. The different dye powder preparation methods did not effect on the colour appearance. The washing fastness of dyed silk fabric from different preparation methods were not significant. The dye powder of Lac, Ebony heart wood, Sappan heart wood showed good light fastness and the Turmeric dye powder showed poor light fastness on silk fabric.Rajamangala University of Technology Phra Nakho

การพิมพ์สีธรรมชาติจากเปลือกลูกจากแห้ง

รายงานวิจัย -- มหาวิทยาลัยเทคโนโลยีราชมงคลพระนคร, 2556The aim of this research is to study white and colour resist printing of dye extracted from dry nipa palm shell. The printing recipes and fixation condition were studied in this work. The result of white resist printing showed that 30 % owp of sodium carbonate (Na2CO3) was used to be a resisting agent. The steam fixation for 15 minutes was suitable to show a good white resist printing in whiteness and sharpness of printing pattern. The whiteness value was 35.05. The washing and rubbing fastness were good to very good and light fastness was fair. The tensile strengths of warp and weft directions were decreased to 10.29 % and 4.25 %, respectively. The colour resist printing was using Curcuma longa Linn. powder as illuminant dye. The dye was miscible in 30 % owp of sodium carbonate. The colour resist printing results were corresponding as white resist printing results. The 15 minute of steam fixation showed a good colour resist printing. The Curcuma longa Linn dye could be fixed on silk fabric and showed a good colour strength and sharpness of pattern. The washing and rubbing fastness were good to very good. And light fastness was fair. The tensile strengths of warp and weft directions were decreased to 18.37 % and 4.18 %, respectively.Rajamangala University of Technology Phra Nakho

การพัฒนานวัตกรรมรูปแบบลวดลายทอและสีผ้าไหมนาโพธิ์ บุรีรัมย์

รายงานวิจัย -- มหาวิทยาลัยเทคโนโลยีราชมงคลพระนคร, 2558Mudmee silk and silk weaving are the long carried cultural wisdom heritages inherited from ancestors. Buriram is another province where weaves Thai silk especially in Na Pho district. Na Pho Silk Weaving Center (Na Pho Handicraft Center) has been known for madmee silk and silk weaving in quality, standardization and popular. It is retaining traditional patterns and colors. New patterns are created but not much and not very suitable to produce various products. There is an attempt to revamp image of silk fabric and mudmee silk to raise value and use of color in universal design. The development for silk fabric designing and coloring in Na Pho received support for standardization. The design patterns has been inspired by mudmee silk’s ancient patterns, Na Pho district, Buriram province. The highlight of ancient patterns including Lai Khom, Lai Tad, Lai Song Pool, Lai Khor, Lai Eid Tong, Lai Kra Tae Nang Tan or Lai Nak, Lai Kho Pai and Lai Kho Lo (Butterfly) are applied in the process of assigning weaves/colors, the size of the space and color placement for various patterns and application but it is still retaining the original pattern. Single color is applied for such patterns and become visible through its different including navy blue, blue and bluepurple. Study of variation results in color fastness to washing, color fastness to light, color fastness to water and color fastness to perspiration of silk fabric and mudmee silk showed after dyeing. Color fastness to washing exhibited very good wash fastness level of (4-5), Color fastness to light exhibited excellent light fastness level of (5), Color fastness to perspiration (acid and alkaline) exhibited very good level of (4-5) and Color fastness of water exhibited moderate level of (4) The assessment reviews regarding patterns, textures, colors and products from silk fabric and mudmee silk from 20 samples of Na Pho Silk Weaving Center (Na Pho Handicraft Center), Na Pho district, Buriram Province revealed that Pattern of silk fabric and mudmee silk of Na Pho, Buriram province still retained pattern and exhibited excellent value of (75 percent) and good value of (25 percent). Pattern was contemporary between traditional motifs and new design, exhibited excellent value of (50 percent), good value of (40 percent) and moderate value of (10 percent). Pattern was not difficult and not too easy. It was suitable to weave for silk fabric and mudmee silk, exhibited excellent value of (85 percent) and good value of (15 percent). Pattern layout still retained the method of the traditional motifs, exhibited excellent value of (60 percent), good value of (30 percent), and moderate value of (10 percent). Placement and spacing of patterns were balanced and not too tight, exhibited excellent value of (70 percent), good value of (25 percent) and moderate value of (5 percent). The suitable of pattern layout in vertical, horizontal, diagonal and stripes which involved in the manufacture of textile products, exhibited excellent value of (75 percent), good value of (20 percent) and moderate value of (5 percent). Color placement was harmonized and suitable for manufacture of textile products, exhibited excellent value of (60 percent), good of (35 percent) and moderate value of (5 percent). Pattern become visible through its difference when dark color is applied for silk fabric and mudmee silk with exhibited excellent value of (65 percent) and good value of (35 percent). The suitable of apply single color and color which is similar to for the fashion and textile product, exhibited excellent value (50 percent), good value (35 percent) and moderate value (15 percent). The application of the new pattern from the silk fabric and mudmee silk, products exhibited contemporary with excellent value of (85 percent), good value of (10 percent) and moderate value of (15 percent). Bags products from using silk fabric and mudee silk maintained the same identity with excellent value of (70 percent) and good value of (30 percent). Textiles products from silk fabric and mudee silk, Na Pho, Buriram province exhibited excellent value of (60 percent), good value of (35 percent) and moderate value of (5 percent)Rajamangala University of Technology Phra Nakho

การลอกกาวไหมด้วยยางมะละกอ

รายงานวิจัย -- มหาวิทยาลัยเทคโนโลยีราชมงคลพระนคร, 2550Degumming process is a fundamental process for silk yam and silk fabric finishing. The main objective is scouring the substrate such as silk gum (sericin), wax and fatty acid from silk fiber. The principle of degumming process is destroying the peptide linkage of amino acid in sericin structure into a small molecule which is soluble in water. The hydrolysis reaction performed by acid, alkaline, enzyme, surfactant as soap, and high pressure steam process. The conventional methods favor degumming with soap and sodium carbonate. This process has a problem on the surface area of silk. Proteolytic enzymes can answer this problem but it seldom use because of a specific condition and high cost. For this reason, the insteading of papain enzyme from dry latex of Carica payapa Linn. was decided to use for silk degumming at any condition study. This research was concerned with the silk degumming using papain enzyme form dry latex of Carica payapa Linn. The degumming process was performed at the temperature vary from 55 -85 degree Celsius, time fromlO to 40 minutes and the amount of dry latex ranging from 0 to 4% owf in order to study the suitable condition for degumming and surface morphology. The efficiency of degumming process was evaluated by determination of tensile strength and stainiqgJest with dire~~ dyes (C.1. Direct Red 80~StaIDing result.will be opposed to degumming efficiency. The result was revealed; the appropriate conditions for silk degumming with dry Carica payapa Linn. 's latex were recommended as follows : the amount of dry latex solution of 4 % owf at 75 degree Celsius for 30 minutes. The degummed fibers leaves lustrous, soft and surface smooth. This condition does not have effect to tensile strength and fiber surface.Rajamangala University of Technology Phra Nakho