scholarly journals A New Strategy to Synthesize α,ω‐Dihydroxy Multiblock Copolymers via [CpRu(CH 3 CN) 3 ]PF 6 /Quinaldic Acid Catalyst

2019 ◽  
Vol 40 (17) ◽  
pp. 1970041
Author(s):  
Xiuzhong Zhu ◽  
Zichao Wang ◽  
Jie Liu ◽  
Xin Min ◽  
Tong Wang ◽  
...  
Keyword(s):  
Acid Catalyst ◽  
Multiblock Copolymers ◽  
Quinaldic Acid ◽  
New Strategy

A New Strategy to Synthesize α,ω‐Dihydroxy Multiblock Copolymers via [CpRu(CH 3 CN) 3 ]PF 6 /Quinaldic Acid Catalyst

2019 ◽  
Vol 40 (17) ◽  
pp. 1900135 ◽  
Author(s):  
Xiuzhong Zhu ◽  
Zichao Wang ◽  
Jie Liu ◽  
Xin Min ◽  
Tong Wang ◽  
...  
Keyword(s):  
Acid Catalyst ◽  
Multiblock Copolymers ◽  
Quinaldic Acid ◽  
New Strategy

scholarly journals Production of cellulose nanofibrils and films from elephant grass using deep eutectic solvents and a solid acid catalyst

RSC Advances ◽  
2021 ◽  
Vol 11 (23) ◽  
pp. 14071-14078
Author(s):  
Xi-Que Wu ◽  
Pan-Dao Liu ◽  
Qun Liu ◽  
Shu-Ying Xu ◽  
Yu-Cang Zhang ◽  
...  
Keyword(s):  
Solid Acid ◽  
Solid Acid Catalyst ◽  
Cellulose Nanofibrils ◽  
Acid Catalyst ◽  
Deep Eutectic Solvents ◽  
Elephant Grass ◽  
Film Forming ◽  
New Strategy

A new strategy was developed to produce cellulose nanofibrils and films from elephant grass using deep eutectic solvents and a recyclable solid acid catalyst with assistance of ultrasonic disintegration and a suction filtration film forming method.

Morphological studies of linear (AB)n multiblock copolymers and their blends

1992 ◽  
Vol 50 (1) ◽  
pp. 384-385
Author(s):  
Richard J. Spontak ◽  
Steven D. Smith ◽  
Arman Ashraf
Keyword(s):  
Electron Microscopy ◽  
Microphase Separation ◽  
Multiblock Copolymers ◽  
First Order ◽  
Morphological Studies ◽  
Transmission Electron ◽  
First Order Phase Transition ◽  
Covalently Bonded ◽  
Total Molecular Weight ◽  
First Order Phase

Block copolymers are composed of sequences of dissimilar chemical moieties covalently bonded together. If the block lengths of each component are sufficiently long and the blocks are thermodynamically incompatible, these materials are capable of undergoing microphase separation, a weak first-order phase transition which results in the formation of an ordered microstructural network. Most efforts designed to elucidate the phase and configurational behavior in these copolymers have focused on the simple AB and ABA designs. Few studies have thus far targeted the perfectly-alternating multiblock (AB)n architecture. In this work, two series of neat (AB)n copolymers have been synthesized from styrene and isoprene monomers at a composition of 50 wt% polystyrene (PS). In Set I, the total molecular weight is held constant while the number of AB block pairs (n) is increased from one to four (which results in shorter blocks). Set II consists of materials in which the block lengths are held constant and n is varied again from one to four (which results in longer chains). Transmission electron microscopy (TEM) has been employed here to investigate the morphologies and phase behavior of these materials and their blends.

A new strategy for prenatal diagnosis in a sporadic haemophilia B family

Haemophilia ◽  
2001 ◽  
Vol 7 (4) ◽  
pp. 416-418 ◽  
Author(s):  
M. Acquila ◽  
F. Bottini ◽  
A. Valetto ◽  
D. Caprino ◽  
P. G. Mori ◽  
...  
Keyword(s):  
Prenatal Diagnosis ◽  
Haemophilia B ◽  
New Strategy

Guidelines Bring New Strategy in Low-Risk AF

2012 ◽  
Vol 45 (15) ◽  
pp. 12-13
Author(s):  
BRUCE JANCIN
Keyword(s):  
Low Risk ◽  
New Strategy

New Strategy for the Synthesis of 2-Deoxy-C-aryl-nucleoside Frameworks

2006 ◽  
Vol 0 (0) ◽  
pp. 0-0
Author(s):  
S.M. Mahalingam ◽  
S. Vijayasaradhi ◽  
I.S. Aidhen
Keyword(s):  
New Strategy

Super2- Structures in Polydisperse Multiblock-Copolymers

1997 ◽  
Vol 7 (10) ◽  
pp. 1489-1497 ◽  
Author(s):  
A. N. Semenov
Keyword(s):  
Multiblock Copolymers

New strategy to search lead compounds with unique structures from plants

Planta Medica ◽  
2015 ◽  
Vol 81 (11) ◽  
Author(s):  
T Villani ◽  
K Gustafson ◽  
J Zhen ◽  
JE Simon ◽  
Q Wu
Keyword(s):  
Lead Compounds ◽  
New Strategy

Latin America in Difficult Search of Its Way

2004 ◽  
pp. 107-117
Author(s):  
Z. Romanova
Keyword(s):  
Latin America ◽  
Demographic Structure ◽  
Financial Problems ◽  
Strategy Of Development ◽  
Small Countries ◽  
New Strategy

The article is devoted to the analysis of economic and financial problems and contradictions accumulated in Latin America under conditions of globalization and market liberation. The originated unfavorable changes gave rise to the need of policy correction in big and small countries. The author analyses a new strategy of development adequate for Latin America with its specific geopolitical situation, demographic structure and history.

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