The unidirectional regulatory role of coagulation bath temperature on cross-section radius of the PVDF hollow-fiber membrane

2018 ◽  
Vol 550 ◽  
pp. 9-17 ◽  
Author(s):  
Hao Zhang ◽  
Xiaolong Lu ◽  
Zhiyu Liu ◽  
Zhong Ma ◽  
Song Wu ◽  
...  
Keyword(s):  
Cross Section ◽  
Hollow Fiber ◽  
Hollow Fiber Membrane ◽  
Bath Temperature ◽  
Regulatory Role ◽  
Coagulation Bath ◽  
Fiber Membrane ◽  
Coagulation Bath Temperature

scholarly journals Effect of coagulation bath temperature during preparation of PES hollow fiber supported liquid membrane for acetic acid removal

2017 ◽  
Vol 19 ◽  
pp. 118 ◽  
Author(s):  
Sathiya Sanmugam ◽  
Norlisa Harruddin ◽  
Syed M Saufi
Keyword(s):  
Aqueous Solution ◽  
Acetic Acid ◽  
Hollow Fiber ◽  
Liquid Membrane ◽  
Hollow Fiber Membrane ◽  
Bath Temperature ◽  
Supported Liquid Membrane ◽  
Coagulation Bath ◽  
Fiber Membrane ◽  
Coagulation Bath Temperature

<p>Acetic acid is a byproduct of acid hydrolysis of biomass during sugar recovery step in biofuel production. Acetic acid can inhibit the enzyme used during fermentation of sugar to the ethanol. Hollow fiber supported liquid membrane (SLM) was used in this study to remove acetic acid from aqueous solution. Liquid membrane was formulated using trioctylamine and 2-ethyl hexanol as a carrier and solvent, respectively. The hollow fiber membrane support was prepared from 15 wt.% polyethersulfone, 42.5 wt.% polyethyleneglycol 200 and 42.5 wt.% dimethylacetamide. The effect of coagulation bath temperature (CBT) at 30<sup>º</sup>C, 40<sup>º</sup>C and 50<sup>º</sup>C during hollow fiber membrane spinning process was investigated. The porosity of the membrane increased as the CBT increased. The porosity of the membrane prepared using CBT of 30ºC, 40<sup>º</sup>C and 50<sup>º</sup>C were 35.7%, 46.7% and 61.6%, respectively. SLM process using hollow fiber membrane prepared at 50ºC of coagulation bath was able to remove 52% of acetic acid from the aqueous solution.</p><p>Chemical Engineering Research Bulletin 19(2017) 118-122</p>

Analysis of the Influence of Pore-Forming Agent and Coagulation Bath on the Preparation of PES Hollow Fiber Membrane

2020 ◽  
Vol 975 ◽  
pp. 67-75
Author(s):  
Qiu Ying Jia ◽  
Wen Ting Sun ◽  
Shuang Xi Liu ◽  
Xu Gao ◽  
Liang Liang Li ◽  
...  
Keyword(s):  
Cross Section ◽  
Hollow Fiber ◽  
External Surface ◽  
Hollow Fiber Membrane ◽  
Positive Influence ◽  
Raw Material ◽  
Coagulation Bath ◽  
Membrane Property ◽  
Fiber Membrane ◽  
Forming Technology

PES is used as raw material for the preparation of membrane in this paper. Through gas-assisted-phase separation and synergetic pore-forming technology, the influence of the content of CaCO3 in foaming pore-forming agent and the content of N,N-DMAc in coagulation bath on membrane property is studied. The results indicate that this method prepares PES hollow fiber membrane with uniform macroporous structure in which the cross section is wedge-shaped and running through internal and external surface. The addition of CaCO3 can improve membrane property and the increase in the content of DMAc also has a great positive influence on membrane property.

scholarly journals Temperature Coagulant Tub Variation Effect on the Characteristic of Hollow Fiber Dialyser from Cellulose Acetate Composite D-Glucose Monohydrate

2017 ◽  
Vol 31 ◽  
pp. 53-60
Author(s):  
Rizki Firsta Wahyuliswari ◽  
Siswanto ◽  
Prihartini Widiyanti
Keyword(s):  
Tensile Strength ◽  
Creatinine Clearance ◽  
Cellulose Acetate ◽  
Hollow Fiber ◽  
Bath Temperature ◽  
Hollow Fibers ◽  
Coagulation Bath ◽  
Temperature Variations ◽  
Swelling Rate ◽  
Coagulation Bath Temperature

Polysulfone is synthetic polymer widely used as basic material for dialyzer membrane and hydrophobic so it tends to cause fouling. Cellulose acetate is non-synthetic, hydrophilic polymer which has low tendency of fouling and has good thermal stability and permeability so it is considered as alternative material for hollow fiber dialyzer. A proper hollow fiber can be achieved by setting a proper temperature of coagulation bath along the spinning process. This research aims to understand the effect of coagulation bath temperature variations on the physical characteristic such as pore size, tensile strength, swelling rate and creatinine clearance of cellulose acetate – D-glucose monohydrate hollow fibers. Hollow fibers were fabricated using spinneret at temperature variations 5°C, 10°C, 15°C dan 20°C. Physical characteristics were estimated by doing morphology test using SEM, tensile test, swelling test towards Simulated Body Fluid (SBF) and filtration test towards creatinine. Result revealed that the hollow fibers from 5°C coagulation bath temperature gives the best characteristic and performance with tensile strength 27,421 N mm-2, pore size 0,0295–0,0858 nm, swelling rate 4,18%, elongation rate 4,4 %, flux rate 1,6032–1,7956 mL cm-2 min-1 and creatinine clearance rate 40,14–48,30% so it is potential to be applied as dialyzer membrane.

scholarly journals Study of polyamide-6 hollow fiber membranes prepared via a thermally induced phase-separation method

e-Polymers ◽  
2010 ◽  
Vol 10 (1) ◽  
Author(s):  
Zhao-Hui Jiang ◽  
Chang-Fa Xiao ◽  
Xiao-Yu Hu
Keyword(s):  
Hollow Fiber ◽  
Pure Water ◽  
Polymer Concentration ◽  
Water Flux ◽  
Bath Temperature ◽  
Coagulation Bath ◽  
Hollow Fiber Membranes ◽  
Fiber Membranes ◽  
Pure Water Flux ◽  
Coagulation Bath Temperature

AbstractHollow fiber membranes of polyamide-6(PA6) with porous structure were prepared by a thermally induced phase-separation method. N-Ethyl-o/p-toluene sulfonamide was chosen as diluent. On the basis of scanning electron microscopy (SEM) images, porosity, bubble point pore diameter and pure water flux, the influential factors including polymer concentration, coagulation bath temperature, post-stretching were investigated. The results indicate that with the increasing of PA6 concentration ‘slit-shaped’ pores in inner surfaces and cellular structure in cross-sections disappear, correspondingly, the properties of membranes such as porosity and pure water flux become poor. As the coagulation bath temperature varied from 20 °C to 50°C, the pure water flux of membranes is improved from 136 to 244 L·m-2·h-1. Post-stretching make the ‘interfacial micro-pores’ expand due to ‘stress concentration’ phenomenon, thus changing the structure and improving the properties of membranes. PA6 hollow fiber membranes with rational structure and high performance could be obtained by altering polymer concentration, coagulation bath temperature and post-stretching.

High Flux Polysulfone Braided Hollow Fiber Membrane for Wastewater Treatment Role of Zinc Oxide as Hydrophilic Enhancer

2021 ◽  
pp. 105873
Author(s):  
Prakash Peechmani ◽  
Mohd Hafiz Dzarfan Othman ◽  
Roziana Kamaludin ◽  
Mohd Hafiz Puteh ◽  
Juhana Jaafar ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Wastewater Treatment ◽  
Hollow Fiber ◽  
Hollow Fiber Membrane ◽  
High Flux ◽  
Fiber Membrane

Preparation and Characterization of Novel Hollow Fiber Membrane with Multicomponent Polymeric Materials

2012 ◽  
Vol 534 ◽  
pp. 8-12 ◽  
Author(s):  
Yun Qing Li ◽  
Dan Li Xi ◽  
Shun Li Fan
Keyword(s):  
Vinylidene Fluoride ◽  
Hollow Fiber Membrane ◽  
Polymeric Materials ◽  
Bath Temperature ◽  
Coagulation Bath ◽  
Cross Sectional ◽  
Poly Vinyl Chloride ◽  
Poly Vinylidene Fluoride ◽  
Coagulation Bath Temperature

Poly(vinylidene fluoride)(PVDF), poly(vinyl chloride)(PVC), and poly(methyl methacrylate)(PMMA) were used as the main materials in the preparation of novel blend five-hole membrane. Dimethylacetamide (DMAC) and polyvinyl pyrrolidone (PVP) were used as solvent and additive, respectively. The effect of some external coagulation conditions on the property of five-hole membrane was studied. The external coagulation conditions investigated in the work were the coagulation temperature and the DMAC content in coagulation bath. The result showed that the flux increased along with the increase of coagulation bath temperature and could reach the max at 35°C, then decreased gradually. The effect of the DMAC content in coagulation bath on flux is very similar to that of the temperature. The cross-sectional structures were examined by scanning electron microscopy.

scholarly journals EFFECT OF COAGULATION BATH TEMPERATURE ON STRUCTURE AND GAS SEPARATION PROPERTIES OF CELLULOSE HOLLOW FIBER MEMBRANES

2011 ◽  
Vol 011 (4) ◽  
pp. 395-401 ◽  
Author(s):  
Zhiming MAO ◽  
Xingming JIE ◽  
Yiming CAO ◽  
Dandan LIU ◽  
Jianhui LIU ◽  
...  
Keyword(s):  
Gas Separation ◽  
Hollow Fiber ◽  
Bath Temperature ◽  
Coagulation Bath ◽  
Hollow Fiber Membranes ◽  
Fiber Membranes ◽  
Coagulation Bath Temperature
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