• Categories

  • Most Popular Questions

  • Recently Viewed Questions

  • Recent Answers

    How To Make a Digita… on What does a frequency of 100 H…
    Daigrepont on Can an earthquake cause air tu…
    Benedict on How did God come into exi…
    joshua on How does the human body g…
    Ian on How did God come into exi…
  • Recent Questions

  • Blog Stats

    • 2,215,023 hits
  • Visitors since 11-3-08

    counter create hit
  • Terms and Conditions

  • Warning

    We are doing maintenance on this site, so some posts may disappear for a short time. Sorry. Normal service will soon be resumed...
  • Pages

  • March 2008
    M T W T F S S
    « Feb   Apr »
     12
    3456789
    10111213141516
    17181920212223
    24252627282930
    31  
  • Archives

  • Meta

Why is glue sticky?

Why is glue sticky?
Mr. Davies from Swansea (Age: 25-34)

Advertisements

One Response

  1. Hi Mr. Davies :).
    Glue is ‘sticky’ because the fluid surface/material, contact – bonds. The adhesive then dries or ‘cures’ thereby becoming a solid link between the two objects being joined. Looking more closely, the liquid phase enables the glue to ‘invade’ the minute pores, pits and fissures which the smoothest of solid surfaces possess and which will become filled as the gasses there-in are absorbed during the transition or curing of the glue. If two materials share this linkage, then in much the same way as a single link in a chain acts between partners, the solidified glue imparts strength to the structure created. Obviously there are many different kinds of adhesive and their chemical natures dictate the reactions which take place and their intrinsic suitability for individual materials. Animal glues, starches, gums, cellulose, natural rubbers, cements, resins etc. all have their applications and characteristics.
    Over 4000 years ago, during the Egyptian period, applications of glue technology were first recorded, using natural ingredients from animal hides and ground bones boiled for extraction and concentration. These formulae became quite fundamental to all glues for centuries to come. More recently, ‘chemically engineered’ alternatives have enabled stronger bonds between different materials e.g. bodily tissues in operations, to be made. Plasticisers such as glycerine or the cheaper alternative sorbitol, glycols and ‘tackifiers’ improve elasticity and resilience making the glue less brittle when set.
    Glue technology becomes increasingly complex but I hope that the above summary provides sufficient information to answer your question.
    Good Luck.
    Rockno3.

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s

%d bloggers like this: