Sulfur-free lignins as composites of polypropylene films
✍ Scribed by B. Košíková; V. Demianová; M. Kačuráková
- Publisher
- John Wiley and Sons
- Year
- 1993
- Tongue
- English
- Weight
- 593 KB
- Volume
- 47
- Category
- Article
- ISSN
- 0021-8995
No coin nor oath required. For personal study only.
✦ Synopsis
To elucidate the effect of lignin addition, polypropylene films containing 2-10 w t % of spruce organosolv lignin and/or beech wood prehydrolysis lignin were compared with lignin-free polymers with respect to tensile strength and elongation before and after aging. The physicochemical properties of the lignin-containing films were investigated by conductivity measurements, surface behavior, and UV and IR spectroscopy.
📜 SIMILAR VOLUMES
The presence and behaviour of free radicals in the composite lignin/polypropylene films upon heating were studied by electron spin resonance spectroscopy. The variations of free radical concentration with the proportion of lignin in the composites indicate the radical character of the interaction be
## Abstract New composites based on poly(propylene) as polymer matrix and hemp strands as natural reinforcement have been developed by injection‐molding. The materials were previously mixed in a two roll mill to induce the dispersion of the fiber inside the polymer. To improve the adhesion between