Structure-property relationships in polyethylene based films obtained by blow molding as model system of industrial relevance

被引：14

作者：

Duraccio, Donatella ^{[1
]}

Mauriello, Amalia ^{[2
]}

Cimmino, Sossio ^{[1
]}

Silvestre, Clara ^{[1
]}

Auriemma, Finizia ^{[2
]}

De Rosa, Claudio ^{[2
]}

Pirozzi, Beniamino ^{[2
]}

Mitchell, Geoffrey Robert ^{[3
]}

机构：

[1] CNR, IPCB, I-80078 Naples, Italy

[2] Univ Naples Federico II, Dipartimento Sci Chim, I-80216 Naples, Italy

[3] Inst Polytech Leiria, Ctr Rapid & Sustainable Prod Dev, Marinha Grande, Portugal

来源：

EUROPEAN POLYMER JOURNAL | 2015年 / 62卷

关键词：

Polyethylene; Blends; SAXS; WAXS; Solution C-13 NMR; X-RAY-SCATTERING; LOW-DENSITY POLYETHYLENES; DOUBLE YIELD POINTS; MLLDPE/LDPE BLENDS; COPOLYMERS; HDPE; ORIENTATION; ETHYLENE; CRYSTALLIZATION; DEFORMATION;

D O I：

10.1016/j.eurpolymj.2014.11.009

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

A method for the study of structure-property relationships of polyethylene (PE)-based films of potential use in food packaging has been set up. The approach has been demonstrated in the case of films obtained by blow-molding using model mixtures of two different polyethylenes, namely a metallocene-made grade of linear low density polyethylene (mLLDPE) and a low density polyethylene (LDPE). We show that physical properties important for numerous applications of these films, such as water vapor and oxygen permeability, toughness and stress strength, are related to the molecular structure and structural and morphological parameters of the blends, in particular, thickness of amorphous layers in lamellar stacks, lamellar thickness, lamellar twisting, and degree and type of branching. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：97 / 107

页数：11

共 40 条

[21] Network stretching, slip processes, and fragmentation of crystallites during uniaxial drawing of polyethylene and related copolymers. A comparative study [J].