Transient spectroscopic characterization of the ring-opening reaction of tetrahydrochromeno[2,3-dimethyl]indole

2015 ◽  
Vol 29 (5) ◽  
pp. 221-226
Author(s):  
Ariel S. Marshall ◽  
Robert A. Rogers ◽  
Joseph W. Perry ◽  
W. J. Brittain
Keyword(s):  
Ring Opening ◽  
Spectroscopic Characterization ◽  
Ring Opening Reaction

Preparation and Characterization of Zein-Based Nanoparticles via Ring-Opening Reaction and Self-Assembly as Aqueous Nanocarriers for Pesticides

2020 ◽  
Vol 68 (36) ◽  
pp. 9624-9635
Author(s):  
Li Hao ◽  
Guanquan Lin ◽  
Haoguang Wang ◽  
Chuanggeng Wei ◽  
Long Chen ◽  
...  
Keyword(s):  
Self Assembly ◽  
Ring Opening ◽  
Ring Opening Reaction

scholarly journals Characterization of Ring-Opening Reaction of Succinimide Linkers in ADCs

2019 ◽  
Vol 108 (1) ◽  
pp. 133-141 ◽  
Author(s):  
Kai Zheng ◽  
Yan Chen ◽  
John Wang ◽  
Laura Zheng ◽  
Matt Hutchinson ◽  
...  
Keyword(s):  
Ring Opening ◽  
Ring Opening Reaction

scholarly journals Synthesis and characterization of a biodegradable polyaspartic acid/2-amino-2-methyl-1-propanol graft copolymer and evaluation of its scale and corrosion inhibition performance

RSC Advances ◽  
2017 ◽  
Vol 7 (58) ◽  
pp. 36714-36721 ◽  
Author(s):  
Shuchen Shi ◽  
Yufeng Wu ◽  
Yueyan Wang ◽  
Jing Yu ◽  
Ying Xu
Keyword(s):  
Corrosion Inhibition ◽  
Acid Derivative ◽  
Graft Copolymer ◽  
Ring Opening ◽  
Synthesis And Characterization ◽  
Polyaspartic Acid ◽  
Ring Opening Reaction ◽  
Inhibition Performance

Herein, a novel polyaspartic acid derivative, polyaspartic acid/2-amino-2-methyl-1-propanol graft copolymer (PASP/AMP), was synthesized via a ring-opening reaction using polysuccinimide (PSI) and 2-amino-2-methyl-1-propanol (AMP).

Synthesis and Characterization of Photocurable Biodegradable Elastomers

2014 ◽  
Vol 665 ◽  
pp. 359-362
Author(s):  
Fang Yuan Guo ◽  
Xia Shen ◽  
Xiao Hong Pei ◽  
Gen Sheng Yang
Keyword(s):  
1H Nmr ◽  
Ring Opening ◽  
Degradation Rate ◽  
Synthesis And Characterization ◽  
Protein Drugs ◽  
Optimal Conditions ◽  
Cross Link ◽  
Ring Opening Reaction ◽  
The Cross

The aim of this study was to synthesize a serious of biodegradable elastomers by photocurable reaction as a potential biomaterial for the delivery of protein drugs. The macromonomers was prepared via ring opening reaction at 140°C later methacrylic acylated at 50°C. The optimal conditions were investigated and the property of the two macromonomer precursors were characterized via GPC and 1H-NMR. The cross-link degree of the elastomers can be adjusted by changing the concentration of photoinitiator (DMPA), furthermore influence the elastomers’ degradation rate. it could provide more appropriate choice for the elastomers in application.

Synthesis and Characterization of Palm Oil Based Polyol

2013 ◽  
Vol 812 ◽  
pp. 275-280
Author(s):  
Yahaya Siti Munira ◽  
Ahmad Faiza Mohd ◽  
Mohamed Rahmah
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Fourier Transform ◽  
Palm Oil ◽  
Ring Opening ◽  
Hydroxyl Group ◽  
Synthesis And Characterization ◽  
Epoxidized Palm Oil ◽  
Ring Opening Reaction ◽  
Epoxy Groups

In this study, palm oil-based polyols were prepared and characterized. In order to prepare the polyol, Epoxidized palm oil (EPO) was reacted with glycerol and undergoes ring opening reaction. The synthesized oil was characterized by oxygen oxirane content titration (OOC), hydroxyl value test (HV), fourier transform infrared (FTIR) and nuclear magnetic resonance (NMR). Based on the FTIR spectrum of polyols, the disappearance of epoxy groups at 825cm-1, 843cm-1 and the emergence of hydroxyl group at 3394cm-1 are obvious indicating that hydroxyl group of the polyols formed. In NMR, the presence of new signal at δ 3.46ppm (-CH-OH) showed the attachment of hydroxyl group onto the epoxidized palm oil.

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