Microstructural Analysis of Natural Rubber/Millable Polyurethane Blends Using Positron Annihilation Lifetime Spectroscopy

被引：6
作者：
Jose, Renu [1 ]
Ravikumar, H. B. [2 ]
Munirathnamma, L. M. [2 ]
Varghese, Lity Alen [3 ]
Unnikrishnan, G. [1 ]
机构：
[1] Natl Inst Technol, Dept Chem, Calicut 673601, Kerala, India
[2] Univ Mysore, Dept Studies Phys, Mysore, Karnataka, India
[3] Natl Inst Technol, Dept Chem Engn, Calicut, Kerala, India
来源：
POLYMER-PLASTICS TECHNOLOGY AND ENGINEERING | 2018年 / 57卷 / 03期
关键词：
Microstructural analysis; millable polyurethane; natural rubber; positron annihilation spectroscopy; MECHANICAL-PROPERTIES; THERMOPLASTIC POLYURETHANE; FREE-VOLUME; MORPHOLOGICAL PROPERTIES; RUBBER; MISCIBILITY; COMPATIBILIZATION; RHEOLOGY; DENSITY; OIL;
D O I：
10.1080/03602559.2017.1320717
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Positron annihilation lifetime spectroscopy (PALS) was used to investigate the relationship between the free volume properties and miscibility of natural rubber (NR)/millable polyurethane (MPU) blends. The free volume parameters (V-f and I-3) have been found to be increased regularly with an increase in NR concentration in the blend. The morphological analysis of the samples has been performed by scanning electron microscopy. The results obtained from PALS technique have been correlated with the observations from X-ray diffraction analysis and differential scanning calorimetry. Thermogravimetric examination highlighted the enhancement in thermal stability upon blending MPU with NR. [GRAPHICS] .
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收藏
页码：196 / 205
页数：10
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