Polyimide Surface Degradation

Chtaïb, M.; Roberfroid, E. M.; Novis, Y.; Pireaux, Jean‐Jacques; Caudano, R.

doi:10.1021/bk-1990-0440.ch011

Cited by 6 publications

(2 citation statements)

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“…The O1 peak is observed to decrease more rapidly than the O2 peak after laser ablation. The decrease observed for C3 and O1 can be attributed to PET surface reorganization . For example, decarbonylation and hydrogen abstraction might occur during femtosecond laser ablation of the PET substrate .…”

Section: Methodsmentioning

confidence: 99%

“…For example, decarbonylation and hydrogen abstraction might occur during femtosecond laser ablation of the PET substrate . Moreover, small molecules such as CO 2 and CO are extracted from the PET surface, leading to the formation of terminate free radicals . The photon absorption in PET can trigger two types of bond breaking: Norrish type I and II .…”

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Femtosecond Laser Direct Writing of Porous Network Microstructures for Fabricating Super‐Slippery Surfaces with Excellent Liquid Repellence and Anti‐Cell Proliferation

Yong

Huo

Yang

et al. 2018

Adv Materials Inter

103

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In this paper, it is demonstrated that one‐step femtosecond laser ablation can be used to directly fabricate porous network microstructures on various polymer surfaces, including poly(ethylene terephthalate) (PET), poly(methyl methacrylate), polyamide, polycarbonate, polyethylene, and polylactic acid. Taking PET as an example, following femtosecond laser ablation, the PET surface is fully covered by large numbers of interconnected pores with a diameter of several hundred nanometers. The chemical treatment of the porous surface for further lowering of its surface free energy and infusion with lubricating liquid led to the successful fabrication of a slippery surface. The as‐synthesized slippery surface showed excellent liquid‐repellent ability; various liquids are demonstrated to freely slide down such a surface. Compared to previously reported slippery surfaces, the femtosecond laser‐induced slippery surface consists of a porous layer and substrate layer that are inherently one material. Furthermore, it is found that the use of the original laser‐induced porous PET surface as a culture substrate is able to promote the growth of C6 glioma cells, while the slippery PET surface completely inhibits C6 glioma cell growth. It is revealed that femtosecond laser direct writing can be used as a general method to form porous microstructures on various polymer surfaces.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%