http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Effect of PCL and Compatibilizer on the Tensile and Barrier Properties of PLA/PCL Films
Hui Sun,Aiju Xiao,Bin Yu,Gajanan Bhat,Feichao Zhu 한국고분자학회 2017 폴리머 Vol.41 No.2
In this work, the blend films of poly(lactic acid) (PLA) and poly(ε-caprolactone) (PCL) were prepared by the solvent casting method. The influence of PCL content and compatibilizer on the structure, tensile and barrier properties was studied. The results indicated that PCL showed good dispersion in PLA matrix as tributyl citrate (TBC) was added as a compatibilizer. PCL showed a promotion effect on the crystallinity of PLA/PCL films. The compatibility of PLA and PCL was improved by TBC. The tensile modulus and the elongation at break of PLA/PCL films increased to various extents due to the input of PCL and TBC compared to pure PLA film. The improvement of oxygen and water vapor barrier properties of the blend films were provided and depended on the content of PCL and the appearance of TBC. The transparency of the blend films decreased with the increase of the PCL content.
Numan Hoda,Firdevs Mert,Fatma Kara,Hande Gul Atasagun,Gajanan S Bhat 한국섬유공학회 2021 Fibers and polymers Vol.22 No.1
Meltblown nonwovens market has been continuing to grow because of the unique characteristics of allowing theproduction of microfiber webs directly from a thermoplastic polymer in a single step. Whereas a vast majority of meltblownprocesses have utilized the traditional Exxon die, the Biax-die has also been used in some processes. The aim of this studywas to understand the effect of critical process conditions of the Biax process, which has the advantage of lower high pressurehot air consumption compared to the traditional process, on the structure of meltblown webs. As the performance propertiesof meltblown nonwovens are mainly determined by the fiber diameter and diameter distribution, this study focused on thesetwo characteristics considering various process conditions such as melt temperature, melt throughput, air temperature and airpressure. In conclusion, it was observed that there were three distribution types, the normal distribution, log-normaldistribution, and skewed log-normal distribution, for meltblown webs produced by the Biax process. Air pressure and meltthroughput were the most effective process conditions on the fiber diameter of meltblown polypropylene webs. It was alsoobserved that fine fiber webs close to one-micron average fiber diameter and relatively narrower fiber diameter distributioncan be produced under appropriate processing conditions using the Biax process.