scholarly journals STUDIES ON DYEING OF ACRYLIC FIBERS. EFFECTS OF STEAM-HEAT-TREATMENT OF ACRYLIC FIBER ON DYEABILITY

1971 ◽  
Vol 27 (3) ◽  
pp. 144-151
Author(s):  
Masanobu Hoten
Keyword(s):  
Heat Treatment ◽  
Acrylic Fiber ◽  
Acrylic Fibers ◽  
Steam Heat

Passivation of pressure sensitive adhesive stickies by addition of acrylic fibers to OCC pulp before papermaking

TAPPI Journal ◽  
2016 ◽  
Vol 15 (10) ◽  
pp. 631-639
Author(s):  
MOHAMMAD HADI ARYAIE MONFARED ◽  
HOSSEIN RESALATI ◽  
ALI GHASEMIAN ◽  
MARTIN A. HUBBE
Keyword(s):  
Adverse Effects ◽  
Control Sample ◽  
Pressure Sensitive Adhesive ◽  
Acrylic Fiber ◽  
Burst Strength ◽  
Pressure Sensitive Adhesives ◽  
Pressure Sensitive ◽  
Tear Index ◽  
Breaking Length ◽  
Acrylic Fibers

This study investigated the addition of acrylic fiber to old corrugated container (OCC) pulp as a possible means of overcoming adverse effects of water-based pressure sensitive adhesives during manufacture of paper or paperboard. Such adhesives can constitute a main source of stickies, which hurt the efficiency of the papermaking process and make tacky spots in the product. The highest amount of acrylic fiber added to recycled pulps generally resulted in a 77% reduction in accepted pulp microstickies. The addition of acrylic fibers also increased pulp freeness, tear index, burst strength, and breaking length, though there was a reduction in screen yield. Hence, in addition to controlling the adverse effects of stickies, the addition of acrylic fibers resulted in the improvement of the mechanical properties of paper compared with a control sample.

scholarly journals Effect of Saturated Steam Heat Treatment on Physical and Chemical Properties of Bamboo

Molecules ◽  
2020 ◽  
Vol 25 (8) ◽  
pp. 1999 ◽  
Author(s):  
Qiuyi Wang ◽  
Xinwu Wu ◽  
Chenglong Yuan ◽  
Zhichao Lou ◽  
Yanjun Li
Keyword(s):  
Heat Treatment ◽  
Moisture Content ◽  
Treatment Time ◽  
Flexural Modulus ◽  
Initial Moisture Content ◽  
Chemical Properties ◽  
Saturated Steam ◽  
Xrd Patterns ◽  
Physical And Chemical ◽  
Steam Heat

The aim of this study was to investigate the effects of the heat treatment time and initial moisture content of bamboo on the corresponding chemical composition, crystallinity, and mechanical properties after saturated steam heat treatment at 180 °C. The mechanism of saturated steam heat treatment of bamboo was revealed on the micro-level, providing a theoretical basis for the regulation of bamboo properties and the optimization of heat treatment process parameters. XRD patterns of the treated bamboo slices were basically the same. With the increase in the initial moisture content of bamboo, the crystallinity of bamboo increased first and then decreased after treatment. Due to the saturated steam heat treatment, the content of cellulose and lignin in bamboo slices increased while the content of hemicellulose decreased, but the content of cellulose in bamboo with a 40% initial moisture content increased first and then decreased. The shear strength of treated bamboo changed little within 10 min after saturated steam heat treatment, and then decreased rapidly. During the first 20 min with saturated steam heat treatment, the compressive strength, flexural strength, and flexural modulus of elasticity of the treated bamboo increased, and then decreased.

STEAM HEAT TREATMENT AND FUMIGATION WITH ACETIC ACID TO CONTROL BOTRYTIS CINEREA IN KIWIFRUIT

2007 ◽  
pp. 645-652 ◽  
Author(s):  
K. Cetiz ◽  
A.D. Koukounaras ◽  
A.L. Lagopodi ◽  
E.M. Sfakiotakis
Keyword(s):  
Heat Treatment ◽  
Acetic Acid ◽  
Botrytis Cinerea ◽  
Steam Heat

scholarly journals The Influence of Saturated Steam on Moso Bamboo Quasi-static Micromechanical Properties: Nano-Scale Evaluation

2021 ◽  
Author(s):  
Tiancheng Yuan ◽  
Zhaoshun Wang ◽  
Xin Han ◽  
ZhuRun Yuan ◽  
XinZhou Wang ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Cell Wall ◽  
Crystallinity Index ◽  
Thermal Modification ◽  
Moso Bamboo ◽  
Saturated Steam ◽  
Static Properties ◽  
Tan Δ ◽  
Increasing Temperature ◽  
Steam Heat

Abstract In this paper, in order to analyze the quasi-static properties of Moso bamboo, a new, environmentally friendly and eco-friendly method was used for bamboo thermal modification under the effect of saturated steam. Under saturated steam heat treatment, the chemical composition in bamboo decreased, and the bamboo cell wall shrunk slightly. The increased crystallinity index of cellulose and decreased intensity of peaks belong to hemicellulose were confirmed by XRD and Fourier transform infrared (FTIR) spectroscopy. In addition, the highest modulus of elastic and hardness of treated bamboo were 22.5GPa and 1.1GPa at 180℃/10 min. These conclusions confirmed the micro-mechanical properties of the bamboo cell wall were enhanced by saturated steam heat treatment. The E'r of differently treated bamboo increased with increasing temperature and time, while the E''r and tan δ negatively as a function of increasing frequency. Furthermore, this thermal modification can be regarded as a useful, environmental-friendly and eco-friendly treatment to outdoor use of bamboo-based materials.

scholarly journals Grafting of Acrylic Membrane Prepared from Fibers Waste for Dyes Removal: Methylene Blue and Congo Red

Separations ◽  
2021 ◽  
Vol 8 (4) ◽  
pp. 42
Author(s):  
Ahmed Labena ◽  
Ahmed E. Abdelhamid ◽  
Shimaa Husien ◽  
Tarek Youssef ◽  
Ehab Azab ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Congo Red ◽  
Kinetic Studies ◽  
Anionic Dyes ◽  
Acrylic Fiber ◽  
Freundlich Isotherms ◽  
Chemical Grafting ◽  
Full Factorial ◽  
Harmful Effects ◽  
Acrylic Fibers

Dyes are a type of pollutant that have been discharged into water streams by various industries and had harmful effects on the environment and human health. Therefore, present work was directed to recycle acrylic fibers waste to be used as an adsorbent to exclude dyes such as methylene blue (MB) and Congo red (CR) from dyes-polluted wastewater. Acrylic fibers waste was converted into membrane followed by chemical grafting with p-phenylenediamine monomer to form functional modified membranes. Afterwards, some characterization analyses; Fourier transform-infrared, scanning electron microscope, swelling behavior, and porosity properties were performed for the acrylic fiber grafted membrane (AFGM). For obtaining the best conditions that permit the highest adsorption capacity of the AFGM, some preliminary experiments followed by general full factorial design experiments were displayed. Langmuir, Freundlich isotherms and kinetic studies evaluations were applied. Results revealed that, the adsorption capacities of the AFGM were 61% for Methylene blue and 86% for Congo red that stated the high affinity of the AFGM to the anionic dyes. The reusability of the AFGM membranes in different cycles for 3Rs processes “Removal, Recovery, and Re-use” indicated the efficiency of the AFGM to be used in wastewater treatment.

Forensic Analysis of Acrylic Copolymer Fibers by Infrared Microscopy

1993 ◽  
Vol 47 (10) ◽  
pp. 1655-1658 ◽  
Author(s):  
Mary W. Tungol ◽  
Edward G. Bartick ◽  
Akbar Montaser
Keyword(s):  
Potential Application ◽  
Forensic Analysis ◽  
Single Fiber ◽  
Acrylic Copolymer ◽  
Acrylic Fiber ◽  
Preliminary Results ◽  
Ir Microscopy ◽  
Peak Areas ◽  
Absorbance Peak ◽  
Acrylic Fibers

Ratios of absorbance peak areas ( AC=O/ AC=N) of carbonyl and nitrile groups were obtained for single acrylic fibers by IR microscopy. The precision of the comonomer ratios was evaluated for potential application in forensic fiber examinations. Precise (RSDs less than 0.4%) results for repetitive analyses of one location on a fiber were obtained. Precision was reduced when the cited ratio was measured at adjacent locations along the length of a single fiber. A further deterioration in precision was observed when different fiber specimens of the same type were analyzed. Analysis of different acrylic fiber specimens of the same type yielded RSDs which ranged from 2 to 6%. Fibers with diameters which ranged from 13 to 43 µm were examined. Precision was decreased for fibers with smaller diameters. Preliminary results indicate that acrylic fibers can differ by manufacturer as indicated by AC=O/ AC=N.

Sign in / Sign up

Export Citation Format

Share Document