Different epoxidized triglyceride mass spectral peak series were identified, and the number of carbon atoms and epoxide groups was determined. Deadline for manuscript submissions: closed (20 March 2019). Our dedicated information section provides allows you to learn more about MDPI. Example: Noise is overwhelming the entire spectrum. 1. trailer <<6F5ABF03B89B4E3CB6FDA1DCEF419902>]/Prev 1107543/XRefStm 1542>> startxref 0 %%EOF 6545 0 obj <>stream Finally, we extract the atom number density from the spectra which gives us the possibility to evaluate the compaction of polymer ions, and by extension to discern isomeric polymers. %%EOF endstream endobj startxref 0000053100 00000 n Adduct formation, either with solvent molecules, alkali or other metal ions, or with other contaminating components is frequently observed both in ESI and MALDI analysis. Application of “such” ionization techniques, generating predominantly quasi-molecular or adduct ions, enables sequence analysis of natural and synthetic macromolecules. 0000030153 00000 n [M + H] +, [M + NH 4] +, [M + Na] +, or [M + K] +). It permits the production of gas-phase ions from a wide variety of polymers, with little or no fragmentation during ionization. In comparison with batch methods, it is a “green” method, using negligible volumes of organic solvents, and it is cost-effective, avoiding lengthy sample preparation procedures. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. It is based on a fast and efficient extraction of polymer components, such as non-intentionally added species (NIAS), post-polymerization residues, or additives, and residues. 0000004778 00000 n Common background contamination ions encountered in mass spectrometers are polyethylene glycol, polypropylene glycol, phthalates, organic solvent clusters, solvent modifiers, fatty acids, metal ions, tritons, tweens and siloxanes. 0000001819 00000 n Help us to further improve by taking part in this short 5 minute survey, Special Issues and Collections in MDPI journals, Mass Spectrometry Reveals Molecular Structure of Polyhydroxyalkanoates Attained by Bioconversion of Oxidized Polypropylene Waste Fragments, Sequencing of Side-Chain Liquid Crystalline Copolymers by Matrix-Assisted Laser Desorption/Ionization Tandem Mass Spectrometry, One Step Further in the Characterization of Synthetic Polymers by Ion Mobility Mass Spectrometry: Evaluating the Contribution of End-groups, Evaluating Phthalate Contaminant Migration Using Thermal Desorption–Gas Chromatography–Mass Spectrometry (TD–GC–MS), Mass Spectrometric Characterization of Epoxidized Vegetable Oils, Potential of Liquid Extraction Surface Analysis Mass Spectrometry (LESA—MS) for the Characterization of Polymer-Based Materials, New ionization techniques in polymer mass spectrometry, Ion mobility mass spectrometry for polymers, MS for polymerization reaction mechanisms, Sequence analysis of synthetic macromolecules, Decoding of polymeric materials molecular labeling. 0000006256 00000 n �[ykt1҆:ߝ��8�KK�a.gv.�������N��e� ����i� �)��`����d�3�N�� ��8fW{�Xm�N��y]YLSI�]��]�.a��Yb�-/�,5�����ͦ�5�Ca��������h�3 X2��d��,}ܛ�IX���8vw'mf*�X���6�vgA�]�I�ؼ���FAr����5�s]���4/M���ե�>v�K�q ŗ�"%(���َ��M� Prof. Marek M. KowalczukProf. A special issue of Polymers (ISSN 2073-4360). Polymers is an international peer-reviewed open access monthly journal published by MDPI. Subscribe to receive issue release notifications and newsletters from MDPI journals, You can make submissions to other journals. MDPI stays neutral with regard to jurisdictional claims in published maps and institutional affiliations. 0000007961 00000 n Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. 0000008192 00000 n 0000000016 00000 n Dual-stage mass spectrometry (MS/MS) can provide detailed structural information about the repeat … Moreover, mass spectrometry is currently needed for the evaluation and understanding of the relationships among structure, properties, and behavior (before, during and after practical applications) of advanced polymeric materials important for civilization and social function.