Polyester-cotton Blend Research Articles

Moisture-Related Properties of Cotton-Polyester Blend Fabrics

The moisture-related properties of a series of cotton-polyester blend broadcloths and sheetings were investigated. The composition of the broadcloth ranged from all-cotton to 68% polyester and 32% cotton, and the sheeting varied from all-cotton to 50% polyester and 50% cotton. The moisture properties measured were drop absorbency, wicking time, moisture regain, vapor transport, liquid transport, and total absorbency. The fabrics were tested untreated and finished with various durable-press treatments. Chemical additives either decreased or increased a number of measured moisture properties, some of which might be related to comfort.

Soap‐based detergent formulations: XII. Alternate syntheses of surface active sulfobetaines

AbstractSulfopropylated amphoteric surfactants, previously reported in this journal, displayed excellent surface active properties and were good detergents in combination with soap. New synthetic routes were investigated for the preparation of such types of compounds to provide a more economical process and eliminate the hazards due to propanesultone, which was used in the previously reported synthetic procedure. A series of 2‐hydroxy‐3‐sulfopropyl amphoteric surfactants was prepared by reacting sodium 3‐chloro‐2‐hydroxy‐1‐propanesulfonate (the addition product of sodium bisulfite to epichlorophydrin) with various primary fatty amines as well as with fat derived N,N‐dimethylalkylamines. Quaternary sulfobetaines not possessing a hydroxyl group were obtained from tertiary amines by reaction with allyl chloride followed by bisulfite addition. The solubility behavior (Krafft points) of these compounds indicated that they were not identical with the sulfobetaines prepared with the aid of propanesultone. The secondary and quaternary ammonium compounds exhibited limited water solubility but were good lime soap dispersing agents. They displayed good detergency in combination with soap. The quaternary ammonium derivatives were particularly effective on cottonpolyester blend fabrics.

Solvent Finishing of Cotton and Cotton-Polyester Blends

Azeotropes of low watercontent that boil at less than 100°C were selected as solvents fordimethytotdihydroxyethytene urea and zinc nitrate catalyst in the chemical modification of cotton and cotton-polyester blends. Fabrics were treated by the usual pad-dry-cure techniques, and final properties were compared with those obtained by conventional all- aqueous systems.

Scanning Electron Microscopy Study of the Deformation of Staple Yarns: Cotton, Polyester, and Cotton-Polyester Blends

The deformation of staple cotton, polyester, and cotton/polyester blend yarns has been studied in a small tensile device placed in a scanning electron microscope. The mechanics of failure of the different yarns are considered.

Cellulosic Flame Retardants Prepared Directly from Elemental Phosphorus

A new class of phosphorus-containing polyols that are prepared as residue products directly from elemental phosphorus can be effectively used as cellulosic flame retardants. Long-term laundry durability has been observed through the use of appropriate binder systems and typical textile finishing techniques, even in the case of low-level polyester-cotton blends. The high phosphorus content and ease of synthesis of the phosphorus polyols offer the possibility of a novel approach to developing low-cost textile flame retardants.

Modification of Cotton and Cotton-Polyester Blends with Epoxides

Cotton polyester blend fabrics were treated with a variety of mono-and díepoxides with Zn(BF 4)2 as catalyst. Effect s of pad bath composition with respect to epoxide and catalyst concentrations, solvent, and curing conditions on fahric properties of various cotton polyester blends were evaluated. A 50 '50 blend fabric treated with either Araldite RD-2 or Eponite 100 attained wet and dry wrinkle recoveries of approximately 300 (W + F)° white retaining 80% of the original breaking strength and possessing better resistance to flex abrasion than a 100% cotton fabric of similar construction. Either watrr or methanol was an acceptable solvent for the padding solution.

Lactamide Modification of Durable-Press Resins

Lactamide and N-methylollactamide have been used to modify conventional ethyleneurea-formaldehyde, prolylene urea-formaldehyde, dihydroxyethyleneurea-formaldehyde, and other resins. The effect of these modified resins is great est when they are used on 100% cotton fabrics. In general, while developing a desirable wash and wear rating, physical properties such as abrasion resitance, tensile strength and elongation are significantly increased. Lactamide also seems to have a definite favorable effect on the hand and on the bulkiness of the fabric. Lactamide modified resins have also been applied to cotton-polyester blends where they improve the resistance of the fabric to frosting as well as improving other properties.

Fluorescent Brightening of Polyester-Cotton Blend

Fluorescent Brightening of Polyester-Cotton Blend

Effect of Fiber Initial Modulus on its Migratory Behavior in Yarns

The influence of fiber initial (tensile) modulus on the migratory behavior and physical properties, especially abrasion resistance, of polyester-cotton blends was studied. Nine selected polyesters were blended with combed cotton on the cotton system. For each type of polyester, the polyester/cotton ratio was nominally 50/50, 65/35, and 80/20 by weight. Portions of yarn samples were sectioned and photomicrographs were made. The radial distribution of the blend compo nents have been characterized by a "migration index." It has been found that the initial moduli of component fibers influence the migration of fibers and also the abrasion resistance of fabrics woven from these yarns.

NINTH GEORGE DOUGLAS LECTURE

The historical development of the cotton and man-made fibres dyeing and finishing industry is outlined. Recent developments in the structure and organisation of this industry are then discussed. The future demand for textiles made from cotton and man-made fibres is discussed. Although it is estimated that the total British market for woven and knitted fabrics of cotton and man-made fibres will increase from 3200 million yd2 in 1968 to 3600 million yd2 in 1975, practically the whole of this increase will probably be in knitting. The future organisation of the industry is discussed in relation to future demand. Finishing is now the keystone in the manufacture of textiles. Viyella is basing its forward planning on the likelihood that the demand for polyester-cotton blends will be 400–500 million yd2. The most effective way for firms in the Lancashire textile industry to become more competitive is for them to organise the finishing operation so that maximum economies are realised through long runs and bulk processing. This means that fewer than the present 139 units in piece bleaching, dyeing and printing will be required, and almost certainly fewer than the 70 postulated by the Textile Council.

Measurement of fiber blend variability by activation analysis

The modern trend in textiles is to blend various fibers having different fiber properties to produce yarn and fabric with certain desired physical and chemical properties. The quality of blended yarn and the resulting fabric depends upon the uniformity of blending. In spinning yarns from blends of two or more staple fibers there is no convenient method of measuring the variability of each fiber. It was demonstrated that activation analysis could be used to measure the lengthwise variability of polyester fiber in a cotton-polyester blend at each step of the spinning process.