TITLE

Methanol-assisted crack healing in UV-irradiated poly(methyl methacrylate)

AUTHOR(S)
Hsu, Han-Ren; Cao, Wenxin; Yang, Fuqian; Lee, Sanboh
PUB. DATE
October 2017
SOURCE
Journal of Polymer Research;Oct2017, Vol. 24 Issue 11, p1
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The UV irradiation can cause structural degradation of polymer and limit the applications of polymer as structural materials. In this work, the effects of UV irradiation on the mass transport and crack healing in poly(methyl methacrylate) (PMMA) are studied. The transport behavior of methanol in the PMMA plates with and without the irradiation of UV can be described by anomalous transport. Both activation energies for the case I transport and for the velocity of the case II transport decrease with the increase of the UV-dose for the UV-irradiation on either one side or both sides of the PMMA plates. The UV irradiation reduces the fracture stress of the cracked PMMA plates and retards the recovery of the mechanical strength of the UV-damaged PMMA plates in methanol due to the UV-induced structural degradation. For the methanol-assisted healing of the irradiated, cracked PMMA plates, the recovery of fracture stress is proportional to a power function of the healing time.
ACCESSION #
126260496

 

Related Articles

  • Effect of Delayed Crack Nucleation under Threshold Pulse Loading. Berezkin, A. N.; Krivosheev, S. I.; Petrov, Yu. V.; Utkin, A. A. // Doklady Physics;Nov2000, Vol. 45 Issue 11, p617 

    Presents results of an experimental study using polymethyl methacrylate samples, including those confirming the existence of delayed fracture near the crack tip under short-pulse loading. Interpretation of results in terms of the incubation-time criterion; Character of fracture under dynamic...

  • Nature of ‘‘incubation pulses’’ in the ultraviolet laser ablation of polymethyl methacrylate. Srinivasan, R.; Braren, Bodil; Casey, Kelly G. // Journal of Applied Physics;8/15/1990, Vol. 68 Issue 4, p1842 

    Presents a study that analyzed the application of incubation pulses to the pulses of ultraviolet radiation directed initially at a polymer surface. Information on the features of ultraviolet laser ablation; Assessment of the results of the etching of polymethyl methacrylate; Examination of the...

  • Absorption changes under UV illumination in doped PMMA. Havermeyer, F.; Pruner, C.; Rupp, R.A.; Schubert, D.W.; Krätzig, E. // Applied Physics B: Lasers & Optics;2001, Vol. 72 Issue 2, p201 

    Abstract. The absorption spectra of poly(methyl methacrylate) (PMMA) doped with the photoinitiator 2,2-dimethoxy2-phenylacetophenone (DMPA) change under illumination with UV light. Time-resolved measurements of the kinetics of the absorption changes at 352 nm prove the existence ora second...

  • CRACKING UP.  // Street Machine;Nov2006, Vol. 26 Issue 11, p117 

    The article discusses the magnetic crack-testing or magnafluxing process applied by Dandenong Engine Reconditioning in crack detection. Crack testing in automotive applications involves magnetizing a ferromagnetic component like a head or crank, coating it with a special fluorescent dye...

  • Effects of ultraviolet radiation on ultra-low-dielectric constant thin film fracture properties. Smith, Ryan Scott; Tsui, Ting Y.; Ho, Paul S. // Journal of Materials Research;Sep2009, Vol. 24 Issue 9, p10 

    The effects of ultraviolet (UV) radiation on ultra-low-k dielectric (ULK) thin film fracture toughness were studied. This work discusses both critical and subcritical crack growth behavior under different environments. The critical fracture toughness was measured as a function of applied phase...

  • Extreme is now mainstream. Coppinger, Rob // Electro Optics;Dec2011, Issue 219, p25 

    The article explores the application of extreme ultraviolet (EUV), which was traditionally used in lithography for semiconductor chips. According to Professor John Collier of Great Britain's Science and Technology Facilities Council, EUV is opening the way for devices like the ultra high-speed...

  • Simultaneous Determination of Four Lignan Compounds in Herpetospermum caudigerum by Normal-Phase High-Performance Liquid Chromatography. Hai-Long Yuan; Ming Yang; Rong-Hui You; Yi Liu; Jun Zhu; Huan Xie; Xiao-He Xiao // Journal of Chromatographic Science;Jul2007, Vol. 45 Issue 6, p350 

    A normal-phase high-performance liquid chromatographic method with diode array UV detection is developed for the simultaneous quantitation of four lignan compounds in Herpetospermum caudigerum. This analysis provides a good resolution and reproducibility. Chromatography is carried out with a...

  • An electrochemical methanol actinometer and its application to measurements of the intensity of vacuum UV radiation of a Xe excilamp. Sosnin, E. A.; Zakharova, E. A.; Moskaleva, M. L.; Batalova, V. N. // Instruments & Experimental Techniques;Jan/Feb2006, Vol. 49 Issue 1, p101 

    A methanol actinometer is used for measuring the intensity of vacuum UV radiation of a Xe excilamp. The absorbed radiation dose is determined by measuring the concentration of formaldehyde, which is the decay product of methanol illuminated by UV radiation, with the use of amperometric titration.

  • Tuning of multicompartment micelles from cross-linkable ABC triblock copolymer with the addition of core-forming homopolymer. Haizhou Yu; Wei Jiang // e-Polymers;Jun2010, p1 

    Multicompartment disks with bumpy edges could be synthesized controllably by dissolving a linear ABC amphiphilic triblock copolymer of polystyrene-b-polybutadiene-b-poly (2-vinylpridine) (PS440-b-PBd1020-b-P2VP114) in selective solvent mixtures of toluene and methanol. The disk size was...

  • UV-irradiated thermoluminescence studies of bulk CdS with trap parameter. Tamrakar, Raunak // Research on Chemical Intermediates;Jan2015, Vol. 41 Issue 1, p43 

    The present paper reports synthesis and thermoluminescence studies of bulk CdS. The absorption spectra are observed and reported. The band gap energy of the bulk CdS corresponding to the absorption edge of pure CdS was 2.61 eV. We calculated kinetic parameters such as activation energy ( E),...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics