Title

Properties of Polyamide Hot Melt Adhesive (HMA) Synthesized using Polymerized Fatty Acid and Ethylenediamine.

Authors

KADAM, PRAVIN G.; MHASKE, S. T.

Abstract

Polyamide hot melt adhesives (HMA) were synthesized using ethylenediamine and polymerized fatty acid (PFA) of two different compositions - Type 1 consisting 1% trilinoleic acid, 98% dilinoleic acid, 1% linoleic acid and Type 2 consisting of 22% trilinoleic acid, 75% dilinoleic acid, 3% linoleic acid. The effect of PFA composition on the properties of HMA such as thermal properties: softening temperature (Ts), melting temperature (Tm), crystallization temperature (Tc), enthalpy of melting (Hm) and enthalpy of crystallization (Hc); mechanical properties: tensile strength, stiffness, tensile modulus, % elongation at break and hardness; adhesion properties: lap shear strength (LSS) and T-peel strength (TPS); and rheological properties were investigated. Ts, Tm, Hm, Tc, Hc, hardness, stiffness, tensile strength and tensile modulus were higher for Type 2 PFA synthesized HMA; whereas % elongation at break was higher for Type 1 PFA synthesized HMA. Both the adhesives showed similar TPS and LSS. PHT1 showed higher crystallinity compared to PHT2, determined using X-ray diffraction analysis. Structure and molecular arrangement of the polymeric chains of the prepared adhesive had a profound effect on the obtained properties.

Subjects

POLYAMIDES; ETHYLENEDIAMINE; FATTY acids; X-ray diffraction; TENSILE strength; LINOLEIC acid

Publication

Journal of Polymer Materials, 2013, Vol 30, Issue 1, p65

ISSN

0973-8622

Publication type

Academic Journal