Browse Prior Art Database

Sample Preparation Method for MALDI Analysis

IP.com Disclosure Number: IPCOM000125612D
Original Publication Date: 2001-Mar-20
Included in the Prior Art Database: 2005-Jun-09
Document File: 7 page(s) / 256K

Publishing Venue

National Institute of Standards and Technology

Related People

Barry J. Bauer: INVENTOR

Abstract

Polyethylene and other polyolefins have not been amenable to MALDI or other soft ionization methods of characterization due to the ineffectiveness of conventional methods of cationization. The lack of polar groups, unsaturation, and aromaticity excludes cationization methods that are used for other common polymers. A new process has been invented in which an organic cation is covalently bonded to the polymer to produce the necessary ionization for successful MALDI. A strong MALDI signal results from polymers that give no response by other methods. This represents a major improvement in Polyolefin analysis and quality control. Other polymers such as styrenics can be analyzed by this method also.

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