Communication Dans Un Congrès Année : 2024

How do fishing lines behave in wet collections jars ?

Alice Gimat
Victor Naud
  • Fonction : Auteur
  • PersonId : 1437527
Marc Herbin
  • Fonction : Auteur
  • PersonId : 847575
  • IdHAL : marc-herbin
S. Cersoy

Résumé

Fishing lines are sometimes used to mount specimen of wet collections and preferred to cotton threads for their transparency. Despite their attested resistance for water, they may behave differently in preserving fluid and although they seem less sensitive to the fluids than metal or silk wires, elongation of the lines may happen within a few weeks, leading to the necessity to renew or change the mounting. To ensure a stable mounting, it appears determinant to choose a line that resists the fluid exposure, has a good tensile strength, does not get slack and remains as transparent as possible. This project aimed at assessing the performance of different kind of fishing line in various types of fluids, so as to figure out the best choice for a preparation. Several kinds of lines (including polyamide and fluorocarbon polymer), with different diameters and strengths, were immerged in four fluids: •ethanol 75%, •formaldehyde 37%(w/w): a saturated solution of formaldehyde in water •formalin 10%: one part of formaldehyde 37% solution diluted with nine parts of water, buffered at pH 6.8, •modified Kaiserling III solution with the addition of thymol). After various exposure time, we have compared their visual appearance and their mechanical properties (tensile strength, elongation). These analyses were completed with FTIR measurements to assess possible chemical changes. To reproduce more realistically their use in collection, a second experiment was carried out, by immersing the line with a weight to apply a mechanical constraint on it and their elongation was monitored versus time. These two experiments give an insight into their durability in collections

Domaines

Fichier non déposé

Dates et versions

hal-04770277 , version 1 (06-11-2024)

Identifiants

  • HAL Id : hal-04770277 , version 1

Citer

Alice Gimat, Victor Naud, Vincent Cuisset, Marc Herbin, S. Cersoy. How do fishing lines behave in wet collections jars ?. SPNHC-TDWG 2024, Sep 2024, Naha (Okinawa), Japan. ⟨hal-04770277⟩
56 Consultations
0 Téléchargements

Partager

  • More