On the influence of imidazolium ionic liquids on cellulose derived polymers

被引：12

作者：

Paiva, Tiago ^{[1
]}

Echeverria, Coro ^{[1
,3
]}

Godinho, Maria H. ^{[1
]}

Almeida, Pedro L. ^{[1
,2
]}

Corvo, Marta C. ^{[1
]}

机构：

[1] UNL, Dept Ciencia Mat, Fac Ciencias & Tecnol, CENIMAT i3N, P-2829516 Caparica, Portugal

[2] Inst Super Engn Lisboa, Area Dept Fis, R Conselheiro Emidio Navarro 1, P-1950062 Lisbon, Portugal

[3] CSIC, Inst Ciencia & Tecnol Polimeros, Calle Juan Cierva 3, Madrid 28006, Spain

来源：

EUROPEAN POLYMER JOURNAL | 2019年 / 114卷

关键词：

Hydroxypropylcellulose; Ionic liquids; Rheo-NMR; Rheology; High resolution magic angle spinning; Molecular interactions; MESOPHASE STRUCTURE; OPTICAL-PROPERTIES; CRYSTAL SYSTEM; DISSOLUTION; NANOCRYSTALS; STATE;

D O I：

10.1016/j.eurpolymj.2019.02.032

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The demand for better cellulose solvents has driven the search for new and improved materials to enable the processing of this polysaccharide. Ionic liquids have been debated for a long time as interesting alternatives, but the molecular details on the solubilization mechanism have been a matter of controversy. Herein, for the first time, the structure and dynamics of hydroxypropylcellulose (HPC) liquid crystal solutions were probed in the presence of imidazolium ionic liquids (ILs), conjugating rheological measurements with magnetic resonance spectroscopy. This study provides a characterization of the solutions macroscopic behaviour, where the liquid crystalline (LC) properties were maintained. Using Its with different side chain lengths, the influence of the hydrophobic IL domain in the solvation abilities of ILs towards a cellulose derived polymer was accessed, providing experimental evidence on these interactions.

引用

页码：353 / 360

页数：8

共 33 条

[1]

Alam TM, 2012, ADVANCED ASPECTS OF SPECTROSCOPY, P279, DOI 10.5772/48340

[2] Dissolution state of cellulose in aqueous systems. 2. Acidic solvents [J].

Alves, Luis ;

Medronho, Bruno ;

Antunes, Filipe E. ;

Topgaard, Daniel ;

Lindman, Bjorn .

CARBOHYDRATE POLYMERS, 2016, 151 :707-715

[3]

Burghardt WR, 1998, MACROMOL CHEM PHYSIC, V199, P471, DOI 10.1002/(SICI)1521-3935(19980401)199:4<471::AID-MACP471>3.0.CO

[4]

2-9

[5] Room temperature ionic liquids (RTILs): A new and versatile platform for cellulose processing and derivatization [J].

Cao, Yan ;

Wu, Jin ;

Zhang, Jun ;

Li, Huiquan ;

Zhang, Yi ;

He, Jiasong .

CHEMICAL ENGINEERING JOURNAL, 2009, 147 (01) :13-21

[6] Addition effects of imidazolium salts on mesophase structure and optical properties of concentrated hydroxypropyl cellulose aqueous solutions [J].

Chiba, Ryotaro ;

Ito, Mitsuhiro ;

Nishio, Yoshiyuki .

POLYMER JOURNAL, 2010, 42 (03) :232-241

[7] A Rational Approach to CO2 Capture by Imidazolium Ionic Liquids: Tuning CO2 Solubility by Cation Alkyl Branching [J].

Corvo, Marta C. ;

Sardinha, Joao ;

Casimiro, Teresa ;

Marin, Graciane ;

Seferin, Marcus ;

Einloft, Sandra ;

Menezes, Sonia C. ;

Dupont, Jairton ;

Cabrita, Eurico J. .

CHEMSUSCHEM, 2015, 8 (11) :1935-1946

[8] Two Negative Minima of the First Normal Stress Difference in a Cellulose-Based Cholesteric Liquid Crystal: Helix Uncoiling [J].

Echeverria, Coro ;

Almeida, Pedro L. ;

Gutierrez, Oscar F. Aguilar ;

Rey, Alejandro D. ;

Godinho, Maria Helena .

JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS, 2017, 55 (10) :821-830

[9] Effect of cellulose nanocrystals in a cellulosic liquid crystal behaviour under low shear (regime I): Structure and molecular dynamics [J].

Echeverria, Coro ;

Fernandes, Susete N. ;

Almeida, Pedro L. ;

Godinho, Maria H. .

EUROPEAN POLYMER JOURNAL, 2016, 84 :675-684

[10] A cellulosic liquid crystal pool for cellulose nanocrystals: Structure and molecular dynamics at high shear rates [J].

Echeverria, Coro ;

Almeida, Pedro L. ;

Feio, Gabriel ;

Figueirinhas, Joao L. ;

Godinho, Maria H. .

EUROPEAN POLYMER JOURNAL, 2015, 72 :72-81

← 1 2 3 4 →