Laser Ablative Structural Modification of Poly(ethylene-alt-maleic anhydride)

Abstract

Pulsed IR laser ablation of poly(ethylene-alt-maleic anhydride) results in the deposition of polymeric films possessing the same ratio of anhydride and -CH 2 -groups and represents a very rare example of laser ablative deposition of polymeric films that are structurally identical to the ablated polymer. This process differs from the conventional thermolysis of poly(ethylene-alt-maleic anhydride) that is controlled by expulsion of CO 2 and CO and yields a nonpolar polymeric residue. The IR laser ablation of poly(ethylene-alt-maleic anhydride) in sodium metasilicate affords deposition of polymeric films containing carboxylate (-CO 2 -) groups. This process is the first example of reactive ablation in which the deposited polymeric film incorporates constituents of two different species exposed to laser radiation.

IR laser ablative degradation of poly(phenylene ether-sulfone): Deposition of films containing ether, sulfone, sulfoxide and sulfide groups

“…Refs. [16][17][18][19][20][21]) and we here report on IR laser ablative degradation of PES. We show that this process differs from the conventional pyrolysis and allows deposition of paramagnetic films containing sulfone, sulfoxide and sulfidic groups.…”

IR laser ablative desulfurization of poly(1,4-phenylene sulfide)

“…In this work we continue our previous effort on pulsed IR laser ablation for deposition of thin polymeric films [15,18] and report on PLAD of PPS. We show that this process represents a unique example of desulfurization of S-containing aromatic compounds and results in fabrication of films that are composites of initial PPS, elemental sulfur and polyaromatic material.…”

“…A completely different mode of thermal decomposition of polymers is pulsed infrared laser-induced ablation (PLAD) that can take place by exposing a polymer with pulsed IR laser radiation [10][11][12][13][14][15][16][17][18]. This specific thermal process occurs within a T-jump and is controlled by kinetic rather than thermodynamic polymer degradation.…”

“…IR laser ablative deposition of almost structurally identical films was demonstrated with irradiation of poly(ethylene glycol) [16,17], polysilanes and polycarbosilanes composed of -(CH 3 ) 2 Si-, -(CH 3 ) 2 Si(CH 3 ) 2 SiCH 2 -, -R(CH 3 )Si-and -R(CH 3 )Si(CH 3 ) 2 SiCH 2 CH 2 -units (R = methyl, adamanthyl, phenyl and H [14]) and poly(ethylene-alt-maleic anhydride) [18], whereas significant structural modifications (cross-linking) of the polymer was reported with irradiation of poly[oxy(tetramethyldisilane-1,2-diyl)] [15].…”

IR Laser‐Induced Degradation of Poly(vinyl acetate): Novel Thermal Reactions in Solid Polymers

“…[6] A completely different mode of thermal decomposition of polymers can be achieved when a polymer is exposed to pulsed-IR laser radiation. [7][8][9][10][11][12][13][14] This specific thermal decomposition occurs within a T-jump and is controlled by kinetic rather than thermodynamic polymer degradation. The process is currently of high interest because of the feasibility of fabricating various polymeric films that can be deposited on substrates near the irradiated polymer target.…”