SBR 가황물에서 용매추출 및 분리에 의한 PCA 오일 Type 확인법 A New Method to Identify PCA Oil Type through Solvent Extraction and Separation Skills in a SBR Vulcanizate원문보기
공정오일 내 다핵성 방향족 화합물(PCA)은 무게함량 대비 3%이상 함유한 경우 피부암을 일으키는 것으로 알려졌다. 저함량과 고함량 PCA 오일의 구분 기준은 PCA 함량 3%에 근거한다. 기준 함량 이상이면 발암성 물질인 고함량 PCA 오일로 DAE가 있으며, 기준 함량 이하이면 인체에 안전한 저함량 PCA 오일로 TDAE, MES, 파라핀 오일이 이에 속한다. 상기 4종류의 공정오일을 적용한 SBR 가황물에 용매 추출 및 분리로 오일을 정제한 후, FT-IR분광 기술을 이용하여 PCA 오일 종류을 결정하였다. 그리고 파라핀 오일이 적용된 SBR 가황물에서 고무 약품인 HPPD, TMDQ, 왁스, 공정조제(Structol-40MS)의 오일에 대한 영향을 연구하였다. 분리 정제된 오일로부터 저함량과 고함량 PCA 오일 구분은 방향족 치환체 흡수영역인 파수 864, 810, 754 및 파라핀 또는 나프텐 흡수영역인 파수 721의 상대적인 흡수세기로 확인할 수 있었다.
공정오일 내 다핵성 방향족 화합물(PCA)은 무게함량 대비 3%이상 함유한 경우 피부암을 일으키는 것으로 알려졌다. 저함량과 고함량 PCA 오일의 구분 기준은 PCA 함량 3%에 근거한다. 기준 함량 이상이면 발암성 물질인 고함량 PCA 오일로 DAE가 있으며, 기준 함량 이하이면 인체에 안전한 저함량 PCA 오일로 TDAE, MES, 파라핀 오일이 이에 속한다. 상기 4종류의 공정오일을 적용한 SBR 가황물에 용매 추출 및 분리로 오일을 정제한 후, FT-IR분광 기술을 이용하여 PCA 오일 종류을 결정하였다. 그리고 파라핀 오일이 적용된 SBR 가황물에서 고무 약품인 HPPD, TMDQ, 왁스, 공정조제(Structol-40MS)의 오일에 대한 영향을 연구하였다. 분리 정제된 오일로부터 저함량과 고함량 PCA 오일 구분은 방향족 치환체 흡수영역인 파수 864, 810, 754 및 파라핀 또는 나프텐 흡수영역인 파수 721의 상대적인 흡수세기로 확인할 수 있었다.
More than 3 wt% of polycyclic aromatics (PCAs) in process oil is known to cause skin cancer. The criterion of distinguishing between low PCA oil and high PCA oil is based on 3 wt% of PCA. High PCA oil is called as a carcinogen like distillate aromatic extract (DAE). Low PCA oil is considered as safe...
More than 3 wt% of polycyclic aromatics (PCAs) in process oil is known to cause skin cancer. The criterion of distinguishing between low PCA oil and high PCA oil is based on 3 wt% of PCA. High PCA oil is called as a carcinogen like distillate aromatic extract (DAE). Low PCA oil is considered as safety oils like treated distillate aromatic extract (TDAE), mild extract solvate (MES), and paraffinic oil. Four types of process oils such as DAE, TDAE, MES, and paraffinic oil purified by solvent extraction and separation skills from SBR vulcanizates were measured by FT-IR techniques. The effects of rubber chemicals such as N-1,3-dimethylbutyl-N'-phenyl-p-phenylnenediamine (HPPD), polymerized 2,2,4-trimethyl-1,2-dihydroquinoline (TMDQ), paraffin wax as antidegradants, and processing aid like Structol 40MS on paraffinic oil from SBR vulcanizates were also studied. The type of low or high PCA was identified by the relative abundance of absorbance at the aromatic substitution patterns of 864, 810, and $754cm^{-1}$ and at the paraffinic or naphthenic pattern of $721cm^{-1}$.
More than 3 wt% of polycyclic aromatics (PCAs) in process oil is known to cause skin cancer. The criterion of distinguishing between low PCA oil and high PCA oil is based on 3 wt% of PCA. High PCA oil is called as a carcinogen like distillate aromatic extract (DAE). Low PCA oil is considered as safety oils like treated distillate aromatic extract (TDAE), mild extract solvate (MES), and paraffinic oil. Four types of process oils such as DAE, TDAE, MES, and paraffinic oil purified by solvent extraction and separation skills from SBR vulcanizates were measured by FT-IR techniques. The effects of rubber chemicals such as N-1,3-dimethylbutyl-N'-phenyl-p-phenylnenediamine (HPPD), polymerized 2,2,4-trimethyl-1,2-dihydroquinoline (TMDQ), paraffin wax as antidegradants, and processing aid like Structol 40MS on paraffinic oil from SBR vulcanizates were also studied. The type of low or high PCA was identified by the relative abundance of absorbance at the aromatic substitution patterns of 864, 810, and $754cm^{-1}$ and at the paraffinic or naphthenic pattern of $721cm^{-1}$.
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대상 데이터
Eight carbon black-filled styrene-butadiene rubber (SBR 1502) compounds were prepared. The formulations are given in Table 2.
The formulations are given in Table 2. Five compounds (S1, S2, S3, S4, and S5) were made of SBR 1502, carbon black (N330), cure activators, curatives, paraffin wax, and paraffinic oil with/without antidegradants such as TMDQ and/or HPPD, or processing aid such as Structol 40MS. The first five vulcanizates (S1, S2, S3, S4, and S5) were made to investigate the effect of antidegradants and processing aid.
The initial temperatures of the mixer were 110 ℃ and 80 ℃ for the MB and FM stages, respectively. The MB compound included rubber, carbon black, process oil, cure activators (stearic acid and ZnO) and antidegradants (HPPD, paraffin wax, or TMDQ). The MB compound was discharged at 145 ℃.
The samples were scanned from 400∼ 4000 cm-1 with a resolution 4 cm-1 and the average of ten scans for each sample was taken for the measurement. The chromatograms were obtained by using GC (HP 5890 Series II) equipped with automatic liquid sampler (HP 6890 Series) and integrator (HP 3396 Series III). The conditions for measurement are as follows; injector temperature (250 ℃), injection volume (1 μL), split ratio (300:1), column (20 m x 0.
Figure 2 shows the extracted materials from SBR vulcanizates by ACN. The extracted materials are HPPD (8.57 min), TMDQ (11.24 min), and a trace of oil by GC. These chemicals must be eliminated completely as described in the effect of temperature on extraction.
이론/모형
Extracts in all processes were identified by gas chromatograph. Whether low or high PCA oil for the purified oil based on happening oncogene was determined by FT-IR techniques. The identification of PCA oil type was determined by the relative abundance at the substitution patterns of aromatic ring and the pattern of paraffinic or naphthenic.
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