MOLECULAR AND STRUCTURAL CHARACTERIZATION OF POLYDISPERSE POLYMERS AND COPOLYMERS BY COMBINING MALDI-TOF MASS-SPECTROMETRY WITH GPC FRACTIONATION (Articolo in rivista)

Type

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

Label

• MOLECULAR AND STRUCTURAL CHARACTERIZATION OF POLYDISPERSE POLYMERS AND COPOLYMERS BY COMBINING MALDI-TOF MASS-SPECTROMETRY WITH GPC FRACTIONATION (Articolo in rivista) (literal)

Anno

• 1995-01-01T00:00:00+01:00 (literal)

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

• 10.1021/ma00128a003 (literal)

Alternative label

• Giorgio Montaudo; Domenico Garozzo, Maurizio S. Montaudo, Concetto Puglisi, and Filippo Samperi (1995)
  MOLECULAR AND STRUCTURAL CHARACTERIZATION OF POLYDISPERSE POLYMERS AND COPOLYMERS BY COMBINING MALDI-TOF MASS-SPECTROMETRY WITH GPC FRACTIONATION
  in Macromolecules (Online)
  (literal)

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

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

Pagina inizio

• 7983 (literal)

Pagina fine

• 7989 (literal)

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

• 28 (literal)

Rivista

• Macromolecules (Rivista)

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

• 7 (literal)

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

• 24 (literal)

Note

• ISI Web of Science (WOS) (literal)

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

• Università Catania; CNR (literal)

Titolo

• MOLECULAR AND STRUCTURAL CHARACTERIZATION OF POLYDISPERSE POLYMERS AND COPOLYMERS BY COMBINING MALDI-TOF MASS-SPECTROMETRY WITH GPC FRACTIONATION (literal)

Abstract

• Matrix assisted laser desorption ionization-time of flight mass spectrometry (MALDI-TOF MS) allows detection of large molecules such as those present in synthetic and natural macromolecules. Until recently, it was reported that MALDI-TOF measurements can provide correct molecular weight (MW) averages only for samples with a narrow MW distribution (M,IM,, I 1.20). We have now developed a methodology for polydisperse samples. We recorded the GPC trace of two polydisperse polymeric samples, namely, poly(buty1ene adipate) (PBA) and poly(buty1ene adipate-co-butylene succinate) (PBAS), collecting about 40-50 fractions per run. Selected fractions were analyzed by MALDI-TOF, and the average MW of each fraction was determined, allowing calibration of the GPC curves against absolute MW. The two calibrated GPC traces were then used to compute average MW and molecular weight distributions (MWD) of the unfractionated samples. End group analysis from MALDI-TOF spectra revealed that the PBA sample is composed of seven different types of chains. For the copolymer sample, PBAS, analysis of the MALDI spectra established a random sequence distribution of comonomer units. The succinateladipate molar ratio calculated from the MALDI spectra is in good agreement with the molar ratio found by NMR. (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)
• DOMENICO GAROZZO (Unità di personale interno)

Insieme di parole chiave

• Keywords of "MOLECULAR AND STRUCTURAL CHARACTERIZATION OF POLYDISPERSE POLYMERS AND COPOLYMERS BY COMBINING MALDI-TOF MASS-SPECTROMETRY WITH GPC FRACTIONATION" (Insieme di parole chiave)

Incoming links:

Autore CNR di

• DOMENICO GAROZZO (Unità di personale interno)
• 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

• Keywords of "MOLECULAR AND STRUCTURAL CHARACTERIZATION OF POLYDISPERSE POLYMERS AND COPOLYMERS BY COMBINING MALDI-TOF MASS-SPECTROMETRY WITH GPC FRACTIONATION" (Insieme di parole chiave)