Chain Dynamics and Crystallinite Network Structure of Poly[R-3-hydroxybutyrate-co-4-hydroxybutyrate] as revealed by Solid-state NMR

Soft Matter ◽  
2021 ◽  
Author(s):  
Zhijie Xia ◽  
Haoyuan Zhao ◽  
Yu-Song Wang ◽  
Yiming Ma ◽  
Xiaoliang Wang ◽  
...  
Keyword(s):  
Solid State ◽  
High Resolution ◽  
Network Structure ◽  
Solid State Nmr ◽  
Cross Polarization ◽  
Chain Dynamics ◽  
Nmr Techniques ◽  
Direct Polarization

The chain dynamics and crystallinite network structure of Poly[R-3-hydroxybutyrate-co-4-hydroxybutyrate] (P(3HB-co-4HB)) were systematically investigated by the combination of various solid-state NMR techniques. The high-resolution 13C cross-polarization (CP) and direct-polarization (DP) MAS...

Solid State NMR Studies of the Adsorbed States of Formic Acid on Y Zeolites

1980 ◽  
Vol 3 ◽  
Author(s):  
T. Michael Duncan ◽  
Robert W. Vaughan
Keyword(s):  
Solid State ◽  
Formic Acid ◽  
Solid State Nmr ◽  
Double Resonance ◽  
Chemical Shift Anisotropy ◽  
Surface States ◽  
Cross Polarization ◽  
Nmr Studies ◽  
Y Zeolites ◽  
Nmr Techniques

ABSTRACTSeveral multiple-pulse double-resonance NMR techniques have been applied to isolate and characterize the spectra of the adsorbed states of formic acid on two Y zeolites. The two surface states, bidentatT3 and ynidentate, possess different motional properties and 13C - H cross-polarization techniques may be used to separate the spectra. The 13C chemical shift anisotropy is founa to iorrelate with the symmetry of the formate species. The H spectrum of the carbonyl hydrogen, selectively observed with the dipolardifference method, indicates that this hydrogen becomes more acidic upon adsorption.

High-resolution solid-state NMR of carbon bonded to deuterium

1987 ◽  
Vol 73 (2) ◽  
pp. 239-243 ◽  
Author(s):  
Scott D Swanson ◽  
S Ganapathy ◽  
Robert G Bryant
Keyword(s):  
Solid State ◽  
High Resolution ◽  
Solid State Nmr
Sign in / Sign up

Export Citation Format

Share Document