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March 7, 20260 citations

Direct fluorescence technique to study evolution in transparency and crossing density at polymer-polymer interface during film formation from high-T latex particles

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�P�. PekcanMCM. Canpolat

Key Points

  • The aim is to explore how transparency and crossing density evolve during latex film formation above the glass transition temperature.
  • Utilized Direct Fluorescence method to study healing processes.
  • Prepared latex films from pyrene-labeled poly(methyl methacrylate) particles.
  • Employed steady-state fluorescence to measure polymer crossing density.
  • Analyzed films with varying latex content below and above healing temperature.
  • Found that crossing density increases linearly with the square root of time.
  • Demonstrated that transparency depends on the latex content and temperature.
  • Confirmed healing effects during film formation above glass transition temperature.

Abstract

The Direct Fluorescence method was used to study the healing process during latex film formation above the glass transition temperature. The latex film was prepared from pyrene (P)-labeled poly(methyl methacrylate) (PMMA) particles. Heptane was used as a mixing agent. The steady-state fluorescence technique was employed to measure the density of polymer chains crossing the particle particle interface. Various latex films with different latex content were used to study the transparency below and above the healing temperature. Crossing density was found to depend linearly on (time) 1/2 , which was proposed by Prager and Tirrell.

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Cite This Study

Pekcan et al. (1996) studied this question.

synapsesocial.com/papers/69abc2855af8044f7a4ec3b5https://doi.org/10.1002/(sici)1097-4628(19960110)59:2<277::aid-app12>3.0.co;2-u
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1The effect of solid content on latex coalescence and film formation: Steady-state energy transfer study with fluorescence labeled polymers1996
  2. 2Healing and photon diffusion during sintering of high-T latex particles1996
  3. 3Fluorescence and UV techniques for studying neck growth and equilibration processes during latex film formation1998
  4. 4Solubility and diffusion in latex films formed from high glass transition temperature particles1998
  5. 5Fluorescence technique to study thickness effect on dissolution of latex films2000