You are here:  > 

RESEARCHING FIBRES IN THE MICROSCOPE!

First image

First image

Close-up image taking a fibre sample

Close-up image taking a fibre sample

Third image

Third image

Working with the microscope at painting department

Working with the microscope at painting department

Linen 200x

Linen 200x

Now it is time to research the fibres used during the paper making process in the different papers of ‘Effort and Ideals’ lithograph prints.

There are several methods to identify fibres such as the staining technique. The most common is Hertzberg’s Reagent which is used for paper fibres are based on iodine and zinc chloride. This type of stain is formulated to dye different groups of fibres differing colours. However, there are many disadvantages using this system because the specific colours stated for particular fibres are difficult to reproduce.

So, in this case we decided to take some samples of fibres of the prints and identify them under the polarising microscope.

In the first image, we are taking a small sample of fibres from one of the prints. We are using an invasive and destructive technique for that reason we have to be extremely careful taking the sample. Just shaving a little bit the very bottom edge we will be able to get enough fibres to analyse in the microscope.

In the third picture we are leaving the fibre sample on the microscope slide. After that, we will cover the sample with a cover slip and sealing with Meltmount (is a thermoplastic: it is fluid when heated and functionally a solid at room temperature; the appearance of the prepared slide will remain unchanged after the slide is returned to room temperature).

Once the sample is ready, we will work with it in the microscope. We took photos applying different magnifications.

In the fifth image, you can observe a detail of a linen fibre through the microscope. The term ‘linen’ covers a wide variety of material described as flax or linen. In both Europe and China flax has been used as a textile material since at least 4,500 BC.

The raw material after cutting and removing the seed head is retted in still or slow running water to slow process of bacterial decomposition. In some areas the process is carried out in a damp atmosphere only.

Linen is a bast fiber. Flax fibers vary in length from about 25 to 150 mm (1 to 6 in) and average 12-16 micrometers in diameter. Flax fibers can usually be identified by their “nodes” which add to the flexibility and texture of the fabric.

Other samples taken from the thinner prints revealed cotton as a main material. So in both cases we are talking about good quality paper fibres.

 

 

Leave a comment


  • National Museum Cardiff

    National Museum Cardiff

    Discover art, natural history and geology. With a busy programme of exhibitions and events, we have something to amaze everyone, whatever your interest – and admission is free!

  • St Fagans National History Museum

    St Fagans

    St Fagans is one of Europe's foremost open-air museums and Wales's most popular heritage attraction.

  • Big Pit National Coal Museum

    Big Pit

    Big Pit is a real coal mine and one of Britain's leading mining museums. With facilities to educate and entertain all ages, Big Pit is an exciting and informative day out.

  • National Wool Museum

    National Wool Museum

    Located in the historic former Cambrian Mills, the Museum is a special place with a spellbinding story to tell.

  • National Roman Legion Museum

    National Roman Legion Museum

    In AD 75, the Romans built a fortress at Caerleon that would guard the region for over 200 years. Today at the National Roman Legion Museum you can learn what made the Romans a formidable force and how life wouldn't be the same without them.

  • National Slate Museum

    National Slate Museum

    The National Slate Museum offers a day full of enjoyment and education in a dramatically beautiful landscape on the shores of Llyn Padarn.

  • National Waterfront Museum

    National Waterfront Museum

    The National Waterfront Museum at Swansea tells the story of industry and innovation in Wales, now and over the last 300 years.

  • Rhagor: Explore our collections

    Rhagor (Welsh for ‘more’) offers unprecedented access to the amazing stories that lie behind our collections.