USE OF CELLULOSE NANOCRYSTALS AS A CORROSION INHIBITOR
The present invention relates to the use of charged cellulose nanocrystals as a corrosion inhibitor. According to one aspect, there is provided a corrosion inhibitor comprising of a plurality of charged cellulose nanocrystals fibrils. There is further provided a process for inhibiting corrosion of metal equipment where water can reside. According to a further aspect, the process includes adding an effective corrosion inhibiting amount of acid-form the cellulose nanocrystals. According to another aspect, the process includes selectively causing a first set of the cellulose nanocrystals to be negatively charged. The first set of the cellulose nanocrystals so charged function as an anodic corrosion inhibitor. The process includes selectively causing a second set of the cellulose nanocrystals to be positively charged. The second set of the cellulose nanocrystals so charged functions as a cathodic corrosion inhibitor.
1 . A corrosion inhibitor comprising:
a plurality of charged cellulose nanocrystals fibrils.
2 . The corrosion inhibitor as claimed in claim 1 wherein the cellulose nanocrystals are in acid-form.
3 . The corrosion inhibitor as claimed in claim 1 for use in inhibiting corrosion in ferrous metals.
4 . The corrosion inhibitor as claimed in claim 1 , wherein the charged cellulose nanocrystals fibrils are attracted to ionic components of a corroding metal surface.
5 . The corrosion inhibitor as claimed in claim 4 , wherein the charged cellulose nanocrystals so attracted form a coating on the metal surface and inhibit electrochemical reactions from driving the corrosion process thereby.
6 . The corrosion inhibitor as claimed in claim 1 wherein the cellulose nanocrystals are negatively charged and function as an anodic corrosion inhibitor.
7 . The corrosion inhibitor as claimed in claim 1 wherein the cellulose nanocrystals are positively charged and function as a cathodic corrosion inhibitor.
8 . The use of the inhibitor as claimed in claim 1 in a paint formulation.
9 . A corrosion-inhibiting cutting fluid composite comprising:
a cutting fluid; and
the corrosion inhibitor as claimed in claim 1 .
10 . The cutting fluid as claimed in claim 9 , wherein the charged cellulose nanocrystals fibrils are configured to be attracted to ionic components of a corroding metal surface.
11 . A process for inhibiting corrosion of metal equipment where water can reside, the process including adding an effective corrosion inhibiting amount of charged cellulose nanocrystals.
12 . The process as claimed in claim 11 , further including dispersing the cellulose nanocrystals within the water.
13 . The process as claimed in claim 11 further including causing the cellulose nanocrystals to be negatively charged, the cellulose nanocrystals so charged functioning as an anodic corrosion inhibitor.
14 . The process as claimed in claim 13 including the step of causing the cellulose nanocrystals to be negatively charged via acid hydrolysis.
15 . The process as claimed in claim 11 including the step of causing the cellulose nanocrystals to be in acid-form.
16 . The process as claimed in claim 11 further including causing the cellulose nanocrystals to be positively charged, the cellulose nanocrystals so charged functioning as a cathodic corrosion inhibitor.
17 . The process as claimed in claim 11 further including selectively causing a first set of the cellulose nanocrystals to be negatively charged, the first set of the cellulose nanocrystals so charged functioning as an anodic corrosion inhibitor, and selectively causing a second set of the cellulose nanocrystals to be positively charged, the second set of the cellulose nanocrystals so charged functioning as a cathodic corrosion inhibitor.
18 . The process as claimed in claim 12 further including providing metal equipment that is ferrous.
19 . The use of charged cellulose nanocrystals as a corrosion inhibitor.
20 . A corrosion inhibitor consisting of a plurality of charged cellulose nanocrystals fibrils.