proton relaxometry
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2020 ◽  
pp. 096739112092607
Author(s):  
Filipe Antonio dos Santos Viegas Ribeiro ◽  
Maxwell de Paula Cavalcante ◽  
Maria Inês Bruno Tavares ◽  
Amanda Ramos Aragão Melo

Hybrid films of poly(3-hydroxybutyrate) (PHB) and modified cellulose by solution casting method were prepared, aiming to study the influence of modified cellulose (0.25%, 0.5% and 0.75% w/w) on the structural organization and thermal properties of PHB matrix. The modified cellulose showed good dispersion in polymer matrix, due to the high compatibility between phases explained by similarity of polymer and filler structures. The composites were studied by wide-angle X-ray diffractometry, differential scanning calorimetry, thermogravimetric analysis, and time-domain nuclear magnetic resonance (NMR) spectroscopy. The conjugation of results coming from those techniques allowed to determine the cellulose concentration that had the highest influence on crystalline planes and degree of crystallinity of PHB, that is, the influence in the composite structure. The molecular dynamics obtained by NMR showed a reciprocal influence between polymer matrix and cellulose particles, enhancing the interactions present in the agglomerated particles.


ChemPhysChem ◽  
2019 ◽  
Vol 20 (5) ◽  
pp. 766-772 ◽  
Author(s):  
Alexey S. Kiryutin ◽  
Mikhail S. Panov ◽  
Alexandra V. Yurkovskaya ◽  
Konstantin L. Ivanov ◽  
Geoffrey Bodenhausen

2018 ◽  
Vol 67 (6) ◽  
pp. 675-683 ◽  
Author(s):  
Elton Jorge da Rocha Rodrigues ◽  
Roberto Pinto Cucinelli Neto ◽  
Pedro José Oliveira Sebastião ◽  
Maria Inês Bruno Tavares

2012 ◽  
Vol 121 (2) ◽  
pp. 480-484 ◽  
Author(s):  
H. Harańczyk ◽  
Ł. Pater ◽  
P. Nowak ◽  
M. Bacior ◽  
M.A. Olech
Keyword(s):  

1992 ◽  
Vol 98 (1) ◽  
pp. 49-61
Author(s):  
Saryu Singh ◽  
C.P.S Taylor ◽  
Brian K Rutt
Keyword(s):  

Author(s):  
S. J. Karlik ◽  
D. H. Lee ◽  
A. J. Fox
Keyword(s):  

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