Poly(ethyl acrylate) surface-initiated ATRP grafting from wood pulp cellulose fibers (Articolo in rivista)

Type
Label
  • Poly(ethyl acrylate) surface-initiated ATRP grafting from wood pulp cellulose fibers (Articolo in rivista) (literal)
Anno
  • 2009-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1016/j.carbpol.2008.06.005 (literal)
Alternative label
  • Zampano, Giovanni; Bertoldo, Monica; Bronco, Simona (2009)
    Poly(ethyl acrylate) surface-initiated ATRP grafting from wood pulp cellulose fibers
    in Carbohydrate polymers; Elsevier Science Ltd., Oxford (Regno Unito)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Zampano, Giovanni; Bertoldo, Monica; Bronco, Simona (literal)
Pagina inizio
  • 22 (literal)
Pagina fine
  • 31 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 75 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Polylab-INFM-CNR Università di Pisa, Dipartiemnto di Chimica e Chimica Industriale (literal)
Titolo
  • Poly(ethyl acrylate) surface-initiated ATRP grafting from wood pulp cellulose fibers (literal)
Abstract
  • Wood pulp cellulose fibers were functionalized by partial esterification of the superficial -OH groups with a-bromoisobutyryl bromide (BIBB) under mild (room temperature and THF as solvent) and harsh (85 ?C and pyridine as solvent) conditions. Samples were characterized by ATR spectroscopy, EDXS, elemental analysis and SEM. Functionalization degrees was varied up to 2% mol Br/OH (by elemental analysis) by varying reaction time and method, without affecting the fiber morphology, except for the highest modification degree, where external cell-wall was partially degraded. The BIBB-functionalized wood pulp cellulose was used as initiator for surface-initiated ATRP of ethyl acrylate in the presence or not of free-''sacrificial\" initiator. Poly(ethyl acrylate) (PEA) modified fibers were characterized by ATR spectroscopy, SEM, thermogravimetric (TGA) and calorimetric (DSC) analyses, while ungrafted polymer was characterized by SEC. A direct correlation was found between the functionalization degree by BIBB and the amount of grafted polymer; products from 3% to 80% wt of grafted poly(ethyl acrylate) were obtained. Thermal destabilization of wood pulp fibers occurred because of the BIBB functionalization, which was recovered by the successive PEA grafting. Moreover, an increase of the glass transition temperature of the grafted polymer with respect to ungrafted one was observed. (literal)
Editore
Prodotto di
Autore CNR
Insieme di parole chiave

Incoming links:


Prodotto
Autore CNR di
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi
Editore di
Insieme di parole chiave di
data.CNR.it