CHARACTERIZATION OF POLYMERS BY MATRIX-ASSISTED LASER-DESORPTION IONIZATION-TIME OF FLIGHT MASS-SPECTROMETRY - END GROUP DETERMINATION AND MOLECULAR-WEIGHT ESTIMATES IN POLY(ETHYLENE GLYCOLS (Articolo in rivista)

Type

• Prodotto della ricerca (Classe)
• Articolo in rivista (Classe)

Label

• CHARACTERIZATION OF POLYMERS BY MATRIX-ASSISTED LASER-DESORPTION IONIZATION-TIME OF FLIGHT MASS-SPECTROMETRY - END GROUP DETERMINATION AND MOLECULAR-WEIGHT ESTIMATES IN POLY(ETHYLENE GLYCOLS (Articolo in rivista) (literal)

Anno

• 1995-01-01T00:00:00+01:00 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi

• 10.1021/ma00117a028 (literal)

Alternative label

• Giorgio Montaudo; Maurizio S. Montaudo, Concetto Puglisi, and Filippo Samperi (1995)
  CHARACTERIZATION OF POLYMERS BY MATRIX-ASSISTED LASER-DESORPTION IONIZATION-TIME OF FLIGHT MASS-SPECTROMETRY - END GROUP DETERMINATION AND MOLECULAR-WEIGHT ESTIMATES IN POLY(ETHYLENE GLYCOLS
  in Macromolecules (Print)
  (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

• Giorgio Montaudo; Maurizio S. Montaudo, Concetto Puglisi, and Filippo Samperi (literal)

Pagina inizio

• 4562 (literal)

Pagina fine

• 4569 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

• 28 (literal)

Rivista

• Macromolecules (Rivista)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo

• 13 (literal)

Note

• ISI Web of Science (WOS) (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

• Università Catania; CNR (literal)

Titolo

• CHARACTERIZATION OF POLYMERS BY MATRIX-ASSISTED LASER-DESORPTION IONIZATION-TIME OF FLIGHT MASS-SPECTROMETRY - END GROUP DETERMINATION AND MOLECULAR-WEIGHT ESTIMATES IN POLY(ETHYLENE GLYCOLS (literal)

Abstract

• Matrix-assisted laser desorption ionization-time of flight mass spectrometry (MALDITOF MS) allows mass measurements of large molecules such as those present in synthetic and natural macromolecules. We have used a self-calibrating method for the MALDI-TOF spectra of polymers, enabling us to obtain accurate mass values. Poly(ethy1ene glycol) (PEG) samples having two different kinds of end groups were used in our work: (i) anionic PEG, H-(CHz-CHz-O),-H; (ii) cationic PEG, H-(CHz-CHz-O),-OH. The MALDI-TOF spectra recorded in reflected mode allowed unambiguous identification of the end groups present in these PEG samples. Five anionic PEG samples with very narrow molecular weight distributions (MWD) were studied. The MALDI-TOF spectra of PEGS were recorded in both linear and reflected modes. Due to the high sensitivity and the highly linear response of HIMAS (a microchannel detector equipped with a photomultiplier), measurements of MALDI-TOF spectra were used in our work to estimate the MW and MWD of the PEG samples. Our results show that the molecular weight estimates provided by MALDI-TOF measurements agree with the values obtained by conventional techniques such as GPC, osmometry, and viscometry. (literal)

Prodotto di

• Istituto di chimica e tecnologia dei polimeri (ICTP) (Istituto)

Autore CNR

• CONCETTO PUGLISI (Unità di personale interno)
• FILIPPO SAMPERI (Persona)
• MAURIZIO MONTAUDO (Unità di personale interno)

Insieme di parole chiave

• Parole chiave di "CHARACTERIZATION OF POLYMERS BY MATRIX-ASSISTED LASER-DESORPTION IONIZATION-TIME OF FLIGHT MASS-SPECTROMETRY - END GROUP DETERMINATION AND MOLECULAR-WEIGHT ESTIMATES IN POLY(ETHYLENE GLYCOLS" (Insieme di parole chiave)

Incoming links:

Autore CNR di

• FILIPPO SAMPERI (Persona)
• CONCETTO PUGLISI (Unità di personale interno)
• MAURIZIO MONTAUDO (Unità di personale interno)

Prodotto

• Istituto di chimica e tecnologia dei polimeri (ICTP) (Istituto)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi

• Macromolecules (Rivista)

Insieme di parole chiave di

• Parole chiave di "CHARACTERIZATION OF POLYMERS BY MATRIX-ASSISTED LASER-DESORPTION IONIZATION-TIME OF FLIGHT MASS-SPECTROMETRY - END GROUP DETERMINATION AND MOLECULAR-WEIGHT ESTIMATES IN POLY(ETHYLENE GLYCOLS" (Insieme di parole chiave)