• 한국수산과학회지
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• 제42권5호
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• pp.523-526
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• 2009

Biodegradable polybutylene succinate (BPS) multifilament were designed to degrade upon disposal by the action of afforestration of Ecklonia cava. Matured thalli of E. cava were collected at Jeju for zoospore collection and the substrate for zoospores were BPS multifilament (12 mm, 500 Td/96). The materials were made as nets of $1\;m^2$ with a cross stripes of 10 cm. The unit biodegradable nets bearing germlings of E. cava was moved into Wando where the place is conducting intensive seaweed cultivation in Korea for 5 months of nursery culture until they grew to 10 cm in length after which the nets were transplanted into the sea bed at Jeju at a depth of 12 m and the algal growth was monitored from May 2007 to December 2008. This is the first instance of using the BPS materials for seaweed afforestation to avoid any environmental problems.

• 수산해양교육연구
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• 제25권4호
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• pp.766-774
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• 2013

Biodegradable polybutylene succinate(PBS) is a kind of environmentally friendly plastics for fisheries, because it can mitigate the ghost fishing problem caused by gill-net and trap fisheries. To evaluate durability of PBS monofilament, each of different diameter 3 types of monofilaments were spun and exposed to 56 month outdoor and then their gravity, modification of surface, breaking strength, and elongation were analysed. The gravity of PBS monofilament was estimated to be approximately 1.24 when spinning ratio from 4.8 to 6.1. PBS monofilaments did not show any crack after 56 month exposed to outdoor and load-elastic elongation curve was showed sigmoid type. Decreasing ratio of elongation was appeared in the thinnest monofilament 0.2mm diameter and breaking strength was in the thickest monofilament 0.4mm diameter. Breaking strength and elongation at break were decreased rapidly after 48 month exposed to outdoor. Breaking strength reduced linearly after 48 month exposure, while no such linear relationship was found in the case of elongation at break. In results, it was investigated that the durability of PBS monofilament nets for gillnet and trap were 24, 50 month when keep to land, respectively.

• 수산해양기술연구
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• 제46권3호
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• pp.257-264
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• 2010

In order to improve the breaking strength and elongation of Polybutylene succinate (PBS) monofilament, the monofilament was produced by blending PBS and Polybutlyne adipate-co-terephthalate (PBAT). The PBS/PBAT blend monofilament was prepared by the melt spinning system, and the weight ratios of the compositions of PBS/PBAT was 100/0, 95/5, 90/10 and 85/15, respectively. The breaking strength, elongation, softness and crystallization of PBS/PBAT blend monofilament were analyzed by using a tensionmeter, softness measurement, X-ray diffractometer in the both dry and wet conditions. The PBS/PBAT blend monofilaments were spun in the take-up velocity of 1.19m/sec under the drawing ratio of 6.8:1 condition. The production volumes of PBS/PBAT blend monofilaments showed 20% less than that of Nylon. The breaking strength of PBS/PBAT blend monofilaments were decreased as PBAT contents increased, while elongation and softness were increased. In case of PBAT content were over 5%, the breaking strength, elongation and softness of PBS/PBAT blend monofilaments were not shown to increase in spite of increasing in PBAT contents. Based on these results, it was possible to make the monofilaments with the maximized physical properties when the PBAT contents at 5%.

• 수산해양기술연구
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• 제44권4호
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• pp.265-272
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• 2008

Biodegradable polybutylene succinate(PBS) is an environment friendly plastics for fisheries, because it can mitigate the ghost fishing problem caused by gill-net and trap fisheries. To evaluate photodegradability of PBS monofilament in comparison with polyamide(PA) and polyethylene(PE) monofilament, these 3 types of monofilaments were spun and exposed to ultraviolet light(UV) of weather-ometer for 900 hours, and then their modification, crystal structure, strength, and extensibility were analysed. PBS monofilament did not show any crack and maintained its crystal structure after 900 hour exposure to UV whereas PE monofilament began showing cracks and structure modification after 600 hour exposure. Under UV exposure, the strength and extensibility decreased more rapidly in PBS than in PA and PE. We estimate that gill nets made of PBS monofilament can endure for about 1 year. The breaking strength and elongation decreased linearly with the exposure time for the 3 types of monofilaments. The derived regression equations of the residual tenacity(RT, kg/$mm^2$) and the residual extensibility(RE, %) with the exposure time in year(Y) for each monofilament were; PBS : RT=48.598 - 8.6437Y($R^2=0.93$), RE=28.165 - 7.3233Y($R^2=0.98$), P A : RT=59.771 - 8.6437Y($R^2=0.98$), RE=32.198 - 5.2772Y($R^2=0.92$), P E : RT=60.898 - 5.6528Y($R^2=0.98$), RE=11.887 - 0.7188Y($R^2=0.98$).

• Journal of the Korean Wood Science and Technology
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• 제37권4호
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• pp.310-319
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• 2009

대표적인 친환경 소재인 바이오복합재(bio-composite)의 제조를 위해 기질 고분자로는 생분해성 고분자인 polybutylene succinate (PBS)를 그리고 충전제(filler)로는 대나무 분말(bamboo flour, BF)을 사용하였다. 본 연구에서는 BF의 함량 및 입자 크기가 바이오복합재의 기계적 점탄성적 특성 및 열적 특성에 미치는 영향을 평가하였는데 천연충전제인 BF의 첨가에 따라 인장강도는 감소하였지만 점탄성적 및 열적 특성은 고분자와의 상호작용을 통해 보다 안정적인 결과를 보였다. 또한, 소수성을 나타내는 PBS와 친수성인 BF 사이의 낮은 계면 결합이 바이오복합재의 물성 저하에 영향을 미친다는 사실이 확인되었다.

• 수산해양기술연구
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• 제47권1호
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• pp.10-17
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• 2011

Biodegradable octopus pot was developed to reduce plastic pollution problem in the sea and fishing trouble between fishermen. It can be expect to recycle other wasted biodegrade fishing gear. Experimental fishing was carried out to understand the difference in fishing efficiency between Polyethylene (PE) octopus pots and biodegradable (Polybutylene Succinate and Polybutylene adipate-co-terephthalate) octopus pots which was tried to make in this study in the sea. There were caught by 237 numbers of fishing during the experimental period. Among the 237 numbers of fishing, 160 or 67.5% were PE pots which were more than the biodegradable pots. A comparison of the monthly catches between the PE pots and biodegradable pots shows that the catches were overall higher in the PE pots than in the other pots. The result is very similar with the comparison of total catches by each type of the pots. In terms of bycatch, the number of species, amount of catches and the number of fishing with bycatch were more significant in the biodegradable pots than in the PE pots.

• 멤브레인
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• 제34권1호
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• pp.20-29
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• 2024

분리막 기술은 해수담수화, 기체분리 등 산업용 분리 정제 공정을 비롯하여 우리 주변의 생활용품, 의료 및 헬스케어 제품 등에서 쉽게 찾아볼 수 있다. 최근 지속가능한 친환경 분리막 제조 기술 또한 환경오염을 줄이기 위해 연구되고 있으며, 특히 polylactic acid (PLA), polybutylene adipate terephthalate (PBAT), polybutylene succinate (PBS) 등 생분해성 소재를 활용한 분리막 제조기술이 보고되어 왔다. 기존 분리막 소재와 마찬가지로 생분해성 고분자 소재들 또한 상분리 공정을 통해 다공성 분리막을 제조하는 연구가 이루어지고 있다. 본 총설을 통해 대표적인 생분해성 고분자인 PLA 기반의 상분리 공정을 활용한 분리막 제조 기술 개발 동향을 살펴보고 향후 연구 개발 및 적용 가능성에 대해 고찰해보고자 한다.

• 수산해양기술연구
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• 제51권1호
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• pp.94-101
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• 2015

The heat treatment machine based on immersion was developed to reduce temperature difference during netting process and appraised it performance compared current heat treatment machine using high pressure. It was also reviewed the optimum heat treatment procedures for PBSAT monofilament net in accordance with the immersion time and temperature. The procedure was based on physical measurement such as breaking load, elongation and angle of the mesh for PBSAT monofilament. The water temperature gap of the treatment machine based on immersion was less than $1^{\circ}C$. and the energy consumption was also increased in high temperature condition. It was identified that the optimum temperature was $75^{\circ}C$ and its optimum processing time was between 15 minutes and 20 minutes to get qualified physical properties.

• 수산해양기술연구
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• 제49권4호
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• pp.341-351
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• 2013

Physical characteristics of PA (Polyamide) gill net and biodegradable gill net made by PBS (Polybutylene succinate) (mesh size 63mm, mesh thickness number 2, 2.5, 3) were analyzed to investigate catching efficiency of the biodegradable gill net for Pacific herring. Total 11 numbers of catching efficiency tests were carried out using commercial fishing vessel at Imwon port in Kangwon province from May to June 2013. The amount of catches were 1,535.7kg (18 species) through the catching efficiency tests and it is expected that the practicalization of biodegradable gillnet is possible because there is no difference for catches between PA gillnet and PBS gillnet. Catches of herring according to the thickness of net twine was the highest at No.2 and the thicker net twine tends to decrease the catches.

• Journal of the Korean Wood Science and Technology
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• 제42권4호
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• pp.483-490
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• 2014

마이크로피브릴 셀룰로오스(MFC) 강화 polybutylene succinate (PBS) 나노복합재료의 성질에 미치는 MFC 첨가량 및 커플링제로서 polymeric methylene diphenyl diisocyanate (pMDI)의 첨가 영향을 조사하였다. 나노복합재료의 인장강도 및 탄성율은 MFC의 첨가량이 증가함에 따라 향상되었다. 또한 pMDI 첨가에 의하여 인장강도 및 탄성율은 증가하였으며, MFC첨가량이 증가하면서 그 경향이 더욱 뚜렷하였다. PBS/MFC (70/30) 복합재료에서는 인장강도가 pMDI(1 중량부)의 첨가에 의하여 약 1.5배 이상 향상되었다. 이러한 향상은 pMDI 첨가에 의한 MFC의 분산성 및 메트릭스 고분자와의 계면접착성 향상에 기인하며, 전자현미경을 이용한 파단면 관찰로 확인하였다. 또한, pMDI 첨가에 의하여 나노복합재료의 열적 안정성도 향상되었다.