Journal of Polymer and Biopolymer Physics Chemistry

ISSN (Print): 2373-3403

ISSN (Online): 2373-3411

Website: http://www.sciepub.com/journal/JPBPC

Current Issue» Volume 3, Number 1 (2015)

Article

Changes in Surface Properties and Dyeability of Polyethylene Terephthalate Fibre Pretreated with Selected Chlorinated Solvents

1Science Laboratory Technology Department, Osun State Polytechnic, P.M.B. 301, Iree, Nigeria

2Chemistry Department, Federal University of Technology, P.M.B 704, Akure, Nigeria


Journal of Polymer and Biopolymer Physics Chemistry. 2015, 3(1), 6-11
DOI: 10.12691/jpbpc-3-1-2
Copyright © 2015 Science and Education Publishing

Cite this paper:
Oyeleke G.O., Popoola A.V., Adetuyi A.O.. Changes in Surface Properties and Dyeability of Polyethylene Terephthalate Fibre Pretreated with Selected Chlorinated Solvents. Journal of Polymer and Biopolymer Physics Chemistry. 2015; 3(1):6-11. doi: 10.12691/jpbpc-3-1-2.

Correspondence to: Oyeleke  G.O., Science Laboratory Technology Department, Osun State Polytechnic, P.M.B. 301, Iree, Nigeria. Email: mr.oyeleke@yahoo.com

Abstract

Scanning electron microscopy (SEM) and X- ray diffractometry (XRD) analyses has been used to investigate the structure of polyester fibre surface before and after treatment in some chlorinated solvents; perchloroethylene (PCE), trichloroethylene (TCE), 1,1- dichloroethylene (1,1-DCE) and tetrachloromethane (TCM) for different times in relaxed condition at room temperature. The results of the scanning electron micrographs did not show any observable internal damage in the fiber structure. On the surface however, several changes such as presence of micro voids, roughness and scissions of varying shapes, magnitudes and spacing density have been observed. The intensity of the diffracted peaks from the X- ray diffractographs of the treated fibre also showed a fall compared to the control one which may be accounted for in terms of the surface structural changes earlier on observed. The pretreatment of the polyester fibre with the chlorinated solvents was found to improve the dye uptake of all the treated fibres in the order of TCE > 1,1-DCE > PCE > TCM; this may be due to the large increase in the inter surface area swelling and greater segmental mobility of polymer molecules. TCE was found to be the best among the four solvents in terms of improvement in dye uptake. The improvement in the fastness properties (wash and light) of the pretreated fabrics was also observed. The chlorinated solvents used in this experiment caused structural differences on surface structures of the polyester fibres and these changes are very crucial to the behaviour of the polymer in fibre processing for other essential usage.

Keywords

References

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Article

Acoustical Studies of Molecular Interactions in the Solution of Anti-Malarial Drug

1Jankidevi Bajaj College of Science, Jamnalal Bajaj Marg, Civil Lines Wardha


Journal of Polymer and Biopolymer Physics Chemistry. 2015, 3(1), 1-5
DOI: 10.12691/jpbpc-3-1-1
Copyright © 2015 Science and Education Publishing

Cite this paper:
Ritesh Ramdasji Naik, Sheshrao Vitthalrao Bawankar, Vilas Maruti Ghodki. Acoustical Studies of Molecular Interactions in the Solution of Anti-Malarial Drug. Journal of Polymer and Biopolymer Physics Chemistry. 2015; 3(1):1-5. doi: 10.12691/jpbpc-3-1-1.

Correspondence to: Ritesh  Ramdasji Naik, Jankidevi Bajaj College of Science, Jamnalal Bajaj Marg, Civil Lines Wardha. Email: ritunaik912@rediffmail.com

Abstract

In the present study ultrasonic velocity (U), density (ρ) and viscosity (η) have been measured at frequency 1 MHz in the binary mixtures of chloroquine phosphate with water in the concentration range (0.1 to 0.0125 %) at 303 K,308 K,313 K using multi frequency ultrasonic interferometer. The measured value of density, ultrasonic velocity, and viscosity have been used to estimate the acoustical parameters namely adiabatic compressibility (βa), relaxation time (τ), acoustic impedance (z), free length (Lf), free volume (Vf) and internal pressure (Πi), Wada’s constant (W) to investigate the nature and strength of molecular interaction in the binary mixture of chloroquine phosphate hydrochloride with water. The obtained result supports the complex formation, molecular association by intermolecular hydrogen bonding in the binary liquid mixtures.

Keywords

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