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Dive into the research topics where Edmond T. Quinn is active.

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Featured researches published by Edmond T. Quinn.


Journal of the American Society for Mass Spectrometry | 2002

Detailed analysis of α,ω-bis(4-hydroxybutyl) poly(dimethylsiloxane) using GPC-MALDI TOF mass spectrometry

E. Peter Maziarz; X. Michael Liu; Edmond T. Quinn; Yu-Chin Lai; Daniel M. Ammon; George L. Grobe

In this study the prepolymer α,ω-bis(4-hydroxybutyl) poly(dimethylsiloxane), used in the formulation of oxygen permeable films, is evaluated by gel permeation chromatography (GPC) combined with matrix assisted laser desorption ionization (MALDI) time of flight (TOF) mass spectrometry (MS). Two unexpected mass distributions are observed in the mass spectra. Reaction schemes for the formation of these distributions are proposed. A solution phase trimethylsilane end group modification was performed on the prepolymer to determine whether the unexpected mass distributions occur as impurities from synthesis or as artifacts from the MS process. Evaluation of the TMS modified prepolymer indicates the unexpected mass distributions indeed occur as impurities from the synthetic procedure. Average molecular weight values are determined by traditional GPC, direct MALDI-TOF MS, and GPC-MALDI-TOF MS methods and the results are compared.


Archive | 1998

Silicone-containing prepolymers and low water materials

Paul L. Valint; Yu-Chin Lai; Edmond T. Quinn; Daniel M. Ammon


Archive | 2007

Silicone-containing prepolymers

Yu-Chin Lai; Weihong Lang; Edmond T. Quinn


Archive | 2006

Radiation-absorbing polymeric materials and ophthalmic devices comprising same

Yu-Chin Lai; Edmond T. Quinn


Archive | 1999

Thermoplastic silicone-containing hydrogels

Yu-Chin Lai; Edmond T. Quinn


Archive | 2006

Process for extracting biomedical devices

Yu-Chin Lai; Edmond T. Quinn; Alan C. Wilson


Archive | 2005

Polysiloxane prepolymers for biomedical devices

Yu-Chin Lai; Weihong Lang; Edmond T. Quinn


Archive | 2005

Aromatic-based polysiloxane prepolymers and ophthalmic devices produced therefrom

Yu-Chin Lai; Edmond T. Quinn


Archive | 2005

Hydrogel copolymers for biomedical devices

Yu-Chin Lai; Weihong Lang; Edmond T. Quinn; Dominic V. Ruscio


Archive | 2005

High refractive index polysiloxane prepolymers

Yu-Chin Lai; Edmond T. Quinn; Xiaojun Michael Liu; Edmund P. Maziarz

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