• 대한용접접합학회:학술대회논문집
• /
• 대한용접접합학회 2004년도 춘계 학술발표대회 개요집
• /
• pp.316-318
• /
• 2004

In recent years, plastic waste has been recognized as a worldwide environmental issue. To solve the disposal problem of the plastic waste, alternative treatment such as the use of biodegradable plastic(polybutylene succinate: PBS) is indeed highly in demand due to its merit of PBS buried in soil decomposed into carbon dioxide and water. In the present study, for the production of further functional PBS with TiO$_2$ as photocatalyst, which shows the decomposition of detrimental organic compound and pollutant under ultraviolet irradiation, we attempted to prepare photocatalytic TiO$_2$ coatings on PBS substrate by HVOF and plasma spraying techniques under various conditions using three kinds of agglomerated powders (P200: 200nm, P30: 30nm, P7: 7nm). The microstructures of coatings were characterized with SEM and XRD analysis, and the photocatalytic efficiency of coatings was evaluated through the photo degradation of gaseous acetaldehyde. Therefore, such functional TiO$_2$-Plastic composite material is expected to considerably contribute to the reduction of aggravated environmental problem.

• 월간포장계
• /
• 통권130호
• /
• pp.118-123
• /
• 2004

• 월간포장계
• /
• 통권178호
• /
• pp.74-87
• /
• 2008

• 월간포장계
• /
• 제11호통권175호
• /
• pp.99-113
• /
• 2007

• 월간포장계
• /
• 통권361호
• /
• pp.94-101
• /
• 2023

• 월간포장계
• /
• 통권337호
• /
• pp.98-106
• /
• 2021

• 한국토양비료학회지
• /
• 제49권2호
• /
• pp.125-131
• /
• 2016

The biodegradable film application can escape from plastic environmental pollution. This experiments studied the effect of biodegradable mulch film on the soil microbial community using fatty acid methyl ester method in soybean production field. The soil $NO_3$-N content in polyethylene mulch film (PE) soil was significantly higher than biodegradable mulch film soil (p < 0.05). The soil microbial community of Gram negative bacteria showed significantly higher in biodegradable mulch film soil than PE mulch film soil (p < 0.05). In addition, biodegradable mulch film soil had significantly low ratio of cy17:0 to $16:1{\omega}7c$ and cy19:0 to $18:1{\omega}7c$ compared with those of PE mulch film soil (p < 0.05), indicating that microbial stress decreased. The ratio of cy17:0 to $16:1{\omega}7c$ and cy19:0 to $18:1{\omega}7c$ should be considered as a potential responsible factor for the obvious differentiation that was observed between the biodegradable mulch film soil and PE mulch film soil in a upland field. The results of this experimentation show the potential of using biodegradable mulch film in place of PE.

• 한국디자인학회:학술대회논문집
• /
• 한국디자인학회 2004년도 춘계 학술발표대회 논문집
• /
• pp.96-97
• /
• 2004

• 반도체디스플레이기술학회지
• /
• 제21권3호
• /
• pp.92-97
• /
• 2022

Plastics are classified into 7 types such as PET (PETE), HDPE, PVC, LDPE, PP, PS, and Other for separation and recycling. Recently, large corporations advocating ESG management are replacing them with bioplastics. Incineration and landfill of disposal of plastic waste are responsible for air pollution and destruction of the ecosystem. Because it is not easy to accurately classify plastic materials with the naked eye, automated system-based screening studies using various sensor technologies and AI-based software technologies have been conducted. In this paper, NIR scanning devices considering the NIR wavelength characteristics that appear differently for each plastic material and a system that can identify the type of plastic by learning the NIR spectrum data collected through it. The accuracy of plastic material identification was evaluated through a decision tree-based SVM model for multiclass classification on NIR spectral datasets for 8 types of plastic samples including biodegradable plastic.

• 한국포장학회지
• /
• 제27권3호
• /
• pp.159-167
• /
• 2021

바이오플라스틱의 니즈는 계속 증가중이며 생분해 바이오플라스틱이 실제 현장에 사용되기 위해서는 물성개선이 필요한 실정이다. 본 연구에서는 바이오플라스틱에 과산화물 첨가제를 농도별로 첨가하여 생산한 복합화 필름의 신장율, morphology, TGA 변화를 조사하였다. 신장율과 TGA는 과산화물 상용화제 첨가구가 대조구 보다 더 우수한 것으로 나타났다. 상용화제 첨가량에 따라서 압출성형공정의 생산성에 영향을 미치며, 과산화물은 적정량을 첨가하는 것이 중요한 것으로 나타났다. 복합화 필름의 morphology를 분석한 결과 수지별로 결정화 속도가 달라이형분산배열을 관찰할 수 있었고, 표면물성은 4%의 과산화물 첨가구에서 가장 좋은 것으로 나타났다. 이상의 결과로부터 복합화 생분해 필름 제조 방법으로 과산화물 상용화제를 4% 첨가한 시험구가 우수한 것으로 사료되었다.