Effect of microcrystalline and nanocrystals cellulose fillers in materials based on PLA matrix

被引：65
作者：
dos Santos, Fernanda A. [1 ]
Iulianelli, Gisele C. V. [1 ]
Tavares, Maria I. S. [1 ]
机构：
[1] Univ Fed Rio de Janeiro, Inst Macromol Prof Eloisa Mano, Ave Horacio Macedo 2030,Bloco J, BR-21945970 Rio De Janeiro, RJ, Brazil
来源：
POLYMER TESTING | 2017年 / 61卷
关键词：
Cellulose; Biopolymers; NMR; Mechanical properties; POLYVINYL-ALCOHOL;
D O I：
10.1016/j.polymertesting.2017.05.028
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The aim of this work was to compare the effects of microcrystalline cellulose (MCC) and cellulose nanocrystals (CNC) addition on the properties of PLA matrix. The CNC were obtained by acid hydrolysis of the MCC. Both MCC and CNC were separately incorporated in PLA at ratios of 3, 5 and 7 wt%. In some compositions, organophilic silica (R972) was added to improve the cellulose-matrix compatibility. The properties of the materials were evaluated by FFIR, XRD, NMR and mechanical tests. Functional groups and crystalline structure of MCC and CNC were determined by FTIR and XRD, respectively. NMR T1H values showed that films containing CNC presented better interfacial interaction than those containing MCC, and indicated that R972 acts as compatibilizer. MCC and CNC acted as nucleating agents for PLA crystallization and there was an improvement in the mechanical performance of materials with the addition of CNC. (C) 2017 Elsevier Ltd. All rights reserved.
引用
收藏
页码：280 / 288
页数：9
相关论文
共 20 条
[1]   Development of hybrid nanocomposites based on PLLA and low-field NMR characterization [J].
Almeida, Alessandra dos Santos ;
Bruno Tavares, Maria Ines ;
da Silva, Emerson Oliveira ;
Cucinelli Neto, Roberto Pinto ;
Moreira, Leonardo Augusto .
POLYMER TESTING, 2012, 31 (02) :267-275
[2]   A technique for production of nanocrystalline cellulose with a narrow size distribution [J].
Bai, Wen ;
Holbery, James ;
Li, Kaichang .
CELLULOSE, 2009, 16 (03) :455-465
[3]   New nanocomposite materials reinforced with flax cellulose nanocrystals in waterborne polyurethane [J].
Cao, Xiaodong ;
Dong, Hua ;
Li, Chang Ming .
BIOMACROMOLECULES, 2007, 8 (03) :899-904
[4]   Effect of microcrystallite preparation conditions on the formation of colloid crystals of cellulose [J].
Dong, XM ;
Revol, JF ;
Gray, DG .
CELLULOSE, 1998, 5 (01) :19-32
[5]   Development of biopolymer/cellulose/silica nanostructured hybrid materials and their characterization by NMR relaxometry [J].
dos Santos, Fernanda Abbate ;
Bruno Tavares, Maria Ines .
POLYMER TESTING, 2015, 47 :92-100
[6]  
dos SantosFA., 2016, MAT SCI APPL, V7, P257, DOI [DOI 10.4236/MSA.2016.75026, 10.4236/msa.2016.75026]
[7]  
Hubbe MA, 2008, BIORESOURCES, V3, P929
[8]   Preparation and properties of microfibrillated cellulose polyvinyl alcohol composite materials [J].
Lu, Jue ;
Wang, Tao ;
Drzal, Lawrence T. .
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING, 2008, 39 (05) :738-746
[9]   Cellulose nanomaterials review: structure, properties and nanocomposites [J].
Moon, Robert J. ;
Martini, Ashlie ;
Nairn, John ;
Simonsen, John ;
Youngblood, Jeff .
CHEMICAL SOCIETY REVIEWS, 2011, 40 (07) :3941-3994
[10]   Crystalline structure analysis of cellulose treated with sodium hydroxide and carbon dioxide by means of X-ray diffraction and FTIR spectroscopy [J].
Oh, SY ;
Yoo, DI ;
Shin, Y ;
Kim, HC ;
Kim, HY ;
Chung, YS ;
Park, WH ;
Youk, JH .
CARBOHYDRATE RESEARCH, 2005, 340 (15) :2376-2391
12