Article
  • Effect of the Amount of Catalyst and Chain-Initiator on the Anionic Polymerization of ε-Caprolactam
  • Chung DW, Oh YT, Park YT
  • ε-카프로락탐의 음이온 중합에서 촉매, 개시제의 함량이 중합반응에 미치는 영향
  • 정대원, 오영택, 박영태
Abstract
Monomer casting nylons were synthesized by casting anionic polymerization of ε-caprolactam. Polymerization rates, molecular weights of the products and the conversions were determined while varying the content of catalysts in the range of 0.2~0.6 mol% and 0.1~1.0 mol% for initiator. The polymerization rates were enhanced as the ratio of catalysts to initiator increased. The maximum molecular weight was observed when the ratio of catalysts to initiator was 0.8, and as the ratio increased the molecular weight decreased. On the other hand, when the ratio of catalysts to initiator was below 0.8, the conversions and the molecular weights were abruptly diminished due to the termination of growing chains.

ε-카프로락탐을 단량체로 하여 촉매/개시제 비율을 변화시켜가며 단량체 캐스팅 기법에 위한 음이온 중합으로 나일론6을 제조하였다. 개시제 함량을 0.2-0.6 mol%로, 촉매의 함량을 0.1-1.0 mol%로 변화시켜가며 중합시간, 중합체의 분자량, 반응전환율을 측정하였다. 본 중합반응에서는 촉매/개시제 비율이 높을수록 중합속도는 증가하였다. 촉매/개시제 비율 0.8에서 최대 분자량을 나타냈으며, 비율이 그 이상이 되면 분자량은 점차적으로 낮아졌다. 반면에, 촉매/개시제 비율 0.8이하에서는 저분자 사슬의 생성이 증가하여 생성물의 분자량 및 반응전환율이 급격하게 감소하는 것으로 나타났다.

Keywords: anionic polymerizatin; ε-caprolactam; nylon 6; monomer casting

  • Polymer(Korea) 폴리머
  • Frequency : Bimonthly(odd)
    ISSN 0379-153X(Print)
    ISSN 2234-8077(Online)
    Abbr. Polym. Korea
  • 2022 Impact Factor : 0.4
  • Indexed in SCIE

This Article

  • 2001; 25(1): 1-5

    Published online Jan 25, 2001

  • 10.7317/pk.
  • Received on May 8, 2000
  • Revised on Nov 30, -0001
  • Accepted on Nov 30, -0001

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