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The evaluation of the surface characteristic of the PET film and fabric treated with PEG–diamine
Author(s) -
Kim Kap Jin,
Ko Sohk Won
Publication year - 1986
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1986.070320729
Subject(s) - aminolysis , peg ratio , diamine , adhesion , materials science , polymer chemistry , amine gas treating , peg 400 , nuclear chemistry , chemistry , chemical engineering , composite material , organic chemistry , finance , engineering , economics , catalysis
PET film treated with PEG–diamine at 130°C was investigated for the aminolysis reaction and the pseudografted PEG content was measured with FTNMR. The hydrophilic properties of the PET film and fabric treated with PEG–diamine were estimated by their surface free energies, water‐wicking time, oily soil releasing, and static electricity. Results obtained indicated that the PEG unit was pseudografted to the PET chain end as a result of the aminolysis reaction of the ester bond of PET by the primary amine radical of PEG–diamine. The pseudografted PET content increased with the aminolysis time [PEG wt % = 2.1147 × t (h) 0.4593 ]. γ S P increased very much, γ S d decreased a little, and consequently γ S , I SW n , and the work of adhesion of water W a increased with the increasing PEG content. γ FW decreased very much, γ FO increased a little, and consequently the difference between adhesion tensions of oily soil and water to the specimen ( A FO – A FW ) increased as the PEG content increased. The contact angle of oily soil to the specimen θ O immersed in water increased and consequently θ W and W FO/W decreased. Therefore, the PET fabric treated with PEG–diamine had very good water‐wicking, oily soil releasing, and antistatic properties.