New Mass Spectrometry Techniques for the Analysis of Polymers for Coatings Applications: MALDI and ESI
نویسنده
چکیده
From a traditional perspective, mass spectrometry and polymer analysis appear to be incompatible. Mass spectrometry requires gas-phase ions for a successful analysis and polymers are composed of large, often entangled macromolecules that are not readily converted to gas-phase species. Despite these natural difficulties, mass spectrometry techniques have been developed to characterize the chemical structures of polymers that are of interest to the coatings community. Traditional mass spectrometry techniques developed for polymer analysis, like pyrolysis gas chromatography mass spectrometry (py-GC-MS) use thermal energy to vaporize nonvolatile samples. This thermal energy also decomposed the polymers into constituent parts. The full chemical structure information was lost.
منابع مشابه
MALDI-MS: a Rapid and Reliable Method for Drug-to-Antibody Ratio Determination of Antibody-Drug Conjugates
Background: It is believed that the loading value of anticancer drug conjugated to the monoclonal antibody, called drug-to-antibody ratio (DAR), is the main quality feature of antibody-drug conjugates. Methods: In this study, matrix assisted laser desorption/ionization mass spectrometry was used to determine the average molecular weight of trastuzumab and its three conjugated forms. The differe...
متن کاملApplication Note ET-35 ESI and MALDI Tandem Mass Spectrometry of Poly(ethylene imine)s: A Comparison Study for Structural Characterization
ESI-Q-TOF and MALDI-TOF/TOF mass spectrometers were utilized to elucidate the macromolecular structures of linear poly(ethylene imine) (PEI) polymers, which are of importance in gene delivery. A detailed characterization of linear PEIs was performed by tandem mass spectrometry (MS/MS). This study provides important information with regard to the fragmentation mechanism of PEI polymers and the c...
متن کاملMALDI-TOF MS Coupled with Collision-Induced Dissociation (CID) Measurements of Poly(methyl methacrylate)
Matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOFMS) is one of themost fundamental analysis techniques for proteins, peptides, and synthetic polymers to date. Along with field desorption (FD), fast atom bombardment (FAB), laser desorption coupled with time-of-flight (LD-TOF), secondary ion mass spectrometry coupled with time-of-flight (SIMS-TOF), and electr...
متن کاملPolymer characterization by combining liquid chromatography with MALDI and ESI mass spectrometry.
High-performance polymers are complex mixtures of materials of different size and chemical composition and with different end groups and architecture. To determine the molecular heterogeneity of such systems, hyphenation of several techniques is required. The value of coupling mass spectrometry (MS) with separation techniques has already been recognized - such methods have proved to be among th...
متن کاملQuantification of Melittin in Iranian Honey Bee (Apis mellifera meda) Venom by Liquid Chromatography-electrospray Ionization-ion Trap Tandem Mass Spectrometry (LC-ESI-IT-MS/MS)
The current research aimed to quantify melittin (MEL) in Iranian honey bee (Apis mellifera meda) venom. To this end, a liquid chromatography-electrospray ionization-ion trap tandem mass spectrometry (LC-ESI-IT-MS/MS) approach was employed. Melittin is the main toxic peptide of honey bee venom with various biological and pharmacological activities. It was extracted with...
متن کامل